GMAT Club Forum - Forums > Quantitative Questions

Problem Solving (PS) | Re: What is the sum of all possible solutions to the equation (2x^2-x-9)^

(K-ja) — Sun, 28 Apr 2024 12:10:20 -0800

This is one of the best reasons for justifying the elimination of -2.

sb0541 wrote:

nive28 wrote:

Pritishd wrote:

I am assuming this question to be $\sqrt{2x^2-x-9}=x+1$

Squaring on both the sides:
$2x^2-x-9=x^2+2x+1$
Simplifying will yield:
$x^2-3x-10=0$
$(x-5)(x+2)$
x = 5 or -2
Sum of all possible solutions is $5 + (-2) = 3$
Ans: C

Please confirm the OA.

OA: option d: 5

If we put back the solution x = -2 into the equation then it is not valid .
We get 1 = -(1) , which is not true .
However, for x = 5 then equation is valid giving the result 6 = 6 .

Hence only 5 is a valid solution for the equation .

Statistics : Posted by K-ja • on 11 Jul 2016, 01:37 • Replies 12 • Views 18569

Problem Solving (PS) | Re: In how many ways can 4 people be divided into 2 groups of 2 people eac

(bumpbot) — Sun, 28 Apr 2024 12:02:56 -0800

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Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Statistics : Posted by bumpbot • on 04 Nov 2021, 04:00 • Replies 2 • Views 4269

Problem Solving (PS) | Re: In how many ways can we put 4 different balls in 3 different boxes whe

(bumpbot) — Sun, 28 Apr 2024 12:01:05 -0800

Statistics : Posted by bumpbot • on 28 Sep 2016, 10:40 • Replies 11 • Views 55878

Problem Solving (PS) | Re: If x^2 = x + 1, which of the following is equal to x^3 ?

(Oppenheimer1945) — Sun, 28 Apr 2024 11:56:23 -0800

Jake7Wimmer wrote:

Can someone show how to do this with plugging in numbers please.

The characteristics equation of x^2=x+1 follow the reoccurrence a_n=a_{n-1}+a_{n-2}. , commonly referred to as Fibonacci sequence.

This equation gives golden ratio and inverse of golden ratio as its roots

x^3 is equivalent to a_3 .
x^2 is a_2
x is a_1
1 is 1

You can find a_3 in terms of a_1
a_3=a_2+a_1=a_1+1+a_1=2a_1+1

This corresponds to 2x+1

Posted from my mobile device

Statistics : Posted by Oppenheimer1945 • on 12 Jan 2024, 06:57 • Replies 4 • Views 1626

Problem Solving (PS) | Re: What is the remainder when 7^548 is divided by 10?

(Bunuel) — Sun, 28 Apr 2024 11:42:18 -0800

Danou wrote:

Bunuel wrote:

guddo wrote:

What is the remainder when$7^{548}$ is divided by 10?

A. 1
B. 3
C. 7
D. 8
E.9

Show Spoiler

Attachment:

2024-01-25_13-51-58.png

When dividing a positive integer by 10, the remainder is always the units digit of that integer. For instance, 123 divided by 10 yields the remainder of 3. Hence, essentially we need to find the units digit of$7^{548}$.

$ 7^{548} = (7^2)^{274} = 49^{274} = (50 -1)^{274}$.

When expanding$ (50 -1)^{274}$ , all terms but the last one will have 50 as their factors making them divisible by 10 and the last term will be$(-1)^{274}=1$ , which when divided by 10 yields the remainder of 1. Here, we could also note that when expanding we'll get all the terms with 50 and the last term$(-1)^{274}=1$ , hence the sum would be something with the units digit of 1, giving the remainder of 1 when divided by 10.

Alternatively, we can use the cyclicity of 7 in positive integer power, which is four, meaning that the units digit of 7 in positive integer power repeats in blocks of four {7,
...

Statistics : Posted by Bunuel • on 25 Jan 2024, 04:03 • Replies 4 • Views 1639

Problem Solving (PS) | Re: What is the remainder when 1! + 2! + 3! 100! is divided by 18?

(bumpbot) — Sun, 28 Apr 2024 10:14:32 -0800

Statistics : Posted by bumpbot • on 22 Nov 2021, 03:15 • Replies 2 • Views 4012

Problem Solving (PS) | Re: A box contains 10 pairs of shoes (20 shoes in total). If two

(colfer) — Sun, 28 Apr 2024 10:11:59 -0800

First shoe can be selected in 20 ways. Only one way to get the second shoe and get a pair

Without restriction 20x19

Posted from my mobile device

Statistics : Posted by colfer • on 28 Oct 2009, 01:08 • Replies 18 • Views 69396

Problem Solving (PS) | Re: (6^145^13) - (6^135^14) =

(Bunuel) — Sun, 28 Apr 2024 09:58:55 -0800

Jake7Wimmer wrote:

Bunuel can you help with this question please

$(6^{14}*5^{13})-(6^{13}*5^{14})=$

A. $0$

B. $1$

C. $30$

D. $11^{13}$

E. $30^{13}$
____________________________________

$6^{14}5^{13} -6^{13}5^{14}=$

$=6^{13}*5^{13}(6-5)=$

$=6^{13}*5^{13}=$

$=(6*5)^{13}=$

$=30^{13}$

Answer: E.

Statistics : Posted by Bunuel • on 22 Oct 2023, 16:20 • Replies 3 • Views 1602

Problem Solving (PS) | Re: The retail price of a sweater is $32. If the store can sell the sweate

(bumpbot) — Sun, 28 Apr 2024 09:38:35 -0800

Statistics : Posted by bumpbot • on 18 Apr 2017, 05:05 • Replies 7 • Views 6163

Problem Solving (PS) | Re: Ten strips of paper are numbered from 1 to 10 and placed in a bag. If

(bumpbot) — Sun, 28 Apr 2024 09:37:48 -0800

Statistics : Posted by bumpbot • on 23 Feb 2022, 08:45 • Replies 4 • Views 1673

Problem Solving (PS) | Re: Set A consists of the values 1, 2, and 3. Set B consists of the values

(bumpbot) — Sun, 28 Apr 2024 09:36:47 -0800

Statistics : Posted by bumpbot • on 11 Oct 2018, 02:50 • Replies 6 • Views 3137

Problem Solving (PS) | Re: A computer retailer sells only TFT and LCD monitors. In the graph abov

(bumpbot) — Sun, 28 Apr 2024 09:35:09 -0800

Statistics : Posted by bumpbot • on 26 Dec 2014, 08:37 • Replies 10 • Views 5422

Problem Solving (PS) | Re: In how many ways can the letters of the word "COMPUTER" be arranged if

(bumpbot) — Sun, 28 Apr 2024 09:33:53 -0800

Statistics : Posted by bumpbot • on 27 Jul 2010, 20:50 • Replies 9 • Views 13897

Problem Solving (PS) | Re: If n is a negative integer and q is a positive integer, then there is

(Jake7Wimmer) — Sun, 28 Apr 2024 09:32:33 -0800

Is this really a remainder question? You can really just fill in the missing values.

N=mq+r
N has to be -100
M is only one negative integer
q has to be 30
r has to be a integer that is positive -> that eliminates A) and B) already

New equation is: -100=(M)(30)+R
Literally just plug C,D,E into R and see if you can make equation work.

Only E) 20 works because M will equal -4

-100=(-4)(30) + 20

Statistics : Posted by Jake7Wimmer • on 22 Oct 2023, 16:10 • Replies 10 • Views 3508

Quantitative Questions | Re: Quant Question of the Day Chat

(HarshR9) — Sun, 28 Apr 2024 09:22:01 -0800

Of course. Doesn’t typically happen though - making private is an exception rather than the rule, in this case (other such videos are still accessible).

Statistics : Posted by HarshR9 • on 20 Oct 2022, 20:57 • Replies 4500 • Views 130741

Problem Solving (PS) | Re: If b > 0, x = [square_root]b+9[/square_root], and y = [square_root]b

(Bunuel) — Sun, 28 Apr 2024 09:10:03 -0800

andrewjohn8 wrote:

If b > 0, $x = \sqrt{b+9}$, and $y = \sqrt{b}$, what is the value of the product of x - y and x + y ?

A. 3
B. 9
C. b
D. b + 3
E. b + 9

$(x - y)(x + y) = $

$= x^2 - y^2 =$

$=(\sqrt{b+9})^2 - (\sqrt{b})^2 =$

$ = (b+9) - b =$

$= 9 $

Answer: B.

Statistics : Posted by Bunuel • on 28 Apr 2024, 09:05 • Replies 1 • Views 76

Problem Solving (PS) | Re: A certain company's yearly revenue was 20% less in 2005 than in 2004.

(Jake7Wimmer) — Sun, 28 Apr 2024 09:05:34 -0800

'04 = 100
'05 = 80
'06 = 88
'07 = 100

'06 -> '07 = 88 -> 100

Change to 8800 and 10,000

1% of 8800 is 88 -> Eliminate a) and B) and we will try D) First.

88x14 = (80+8)(10+4) = 800+320+80+32 = 1232 (I used foil just to multiply 88x14 so that I won't make a mistake)
8800+1232 = 10,032 which is aprox 10,000

Thus 14% and D) is answer

Statistics : Posted by Jake7Wimmer • on 24 Oct 2023, 20:31 • Replies 4 • Views 1731

Problem Solving (PS) | When it operates at its own constant rate, hose A can fill an empty

(Fish181) — Sun, 28 Apr 2024 09:05:18 -0800

pick numbers.

Rate of A: 1 tank/2 hours
Rate of B: 1 tank/4 hours

If it takes hose A 2 hours to fill a tank, how long will it take both to fill it?

t/2 + t/4 = 1

t = 4/3

which answer equals 4/3 when you plug in x, the time for hose A. That is x=2.

2(2)/3 = 4/3

Therefore Answer A

Statistics : Posted by Fish181 • on 26 Apr 2024, 21:16 • Replies 6 • Views 261

Problem Solving (PS) | Re: An Ameba is an organic life form that divides into two Amebas each rou

(bumpbot) — Sun, 28 Apr 2024 08:56:11 -0800

Statistics : Posted by bumpbot • on 05 Sep 2019, 04:19 • Replies 5 • Views 1685

Problem Solving (PS) | Re: Let s be the set of all 6-digit numbers of the form 54xy12, where each

(Fish181) — Sun, 28 Apr 2024 08:45:34 -0800

gmatophobia wrote:

Fish181 wrote:

i missed this question because I got favorable cases = 2 and total cases = 6 for 1/3. Why are we multiplying theseresults

Fish181

F avorable cases =6

$y$ can be filled in 2 ways and$x$ can be filled in 3 ways

Hence, favourable cases = 2 * 3 = 6

Here are possible values ofxy

33
53
83
35
55
85

Total cases =9 ,because $x$ can be filled in 3 ways and$y$ can be filled in 3 ways

Here are all the possible values of xy

33
53
83
35
55
85
38
58
88

Hence required probability =$ \frac{\text{Favorable Cases}}{\text{Total Cases}} = \frac{6}{9} =\frac{2}{3}$

Crystal clear thank you! I was not comprehending that 53x,y12 was the six digit number... my mind split it into "53x" , "y12"... no wonder this problem was so confusing to me. Definitely attainable if you understand divisibility rules and some combinatorics.
...

Statistics : Posted by Fish181 • on 01 Nov 2023, 11:43 • Replies 11 • Views 2800

Problem Solving (PS) | Re: A committee of 10 members consists of men and women. If two members of

(bumpbot) — Sun, 28 Apr 2024 08:39:27 -0800

Statistics : Posted by bumpbot • on 03 Jan 2020, 10:08 • Replies 4 • Views 2372

Problem Solving (PS) | Re: An electrical appliances store sold this month 400% more than the aver

(bumpbot) — Sun, 28 Apr 2024 08:35:38 -0800

Statistics : Posted by bumpbot • on 04 Jul 2016, 09:06 • Replies 4 • Views 2188

Problem Solving (PS) | Re: A closed aluminum rectangular box has inner dimensions x centimeters

(bumpbot) — Sun, 28 Apr 2024 08:29:59 -0800

Statistics : Posted by bumpbot • on 21 Oct 2012, 11:07 • Replies 10 • Views 13194

Problem Solving (PS) | Re: Three surgeons - Anna, Claire, and Diane - are asked to perform an eme

(bumpbot) — Sun, 28 Apr 2024 08:24:54 -0800

Statistics : Posted by bumpbot • on 14 Jul 2020, 03:59 • Replies 4 • Views 1215

Problem Solving (PS) | Re: In how many ways can 6 different letters be posted in 3 letterboxes su

(bumpbot) — Sun, 28 Apr 2024 08:18:46 -0800

Statistics : Posted by bumpbot • on 04 Jun 2020, 23:26 • Replies 9 • Views 4291

Problem Solving (PS) | Re: If the tens digit of the positive integer x and the tens digit of the

(Engineer1) — Sun, 28 Apr 2024 07:36:48 -0800

DmitryFarber wrote:

We don't know the number of digits, but it doesn't matter. When we add, no digit affects the value of those to its right, only those to its left.
For instance, if we add 2169 + 53,869, the answer still ends in 38, just as when we add 69 + 69. Similarly, when we double the value, those additional places to the left don't change the fact that 38 doubles to 76.

So in short, we can focus only on the relevant digits and not worry about any other potential digits. This is common on place value/digit problems.

Understood, thank you. I think you meant this, correct? "When we add, no digit affects the value of those to its left, only those to its right."

Statistics : Posted by Engineer1 • on 03 Jan 2024, 06:46 • Replies 8 • Views 2288

Quantitative Questions | Re: How do you memorize formulas?

(bumpbot) — Sun, 28 Apr 2024 07:29:34 -0800

Statistics : Posted by bumpbot • on 25 Oct 2017, 00:56 • Replies 3 • Views 3590

Problem Solving (PS) | Re: If P is a prime number greater than 5, what is the remainder when P^2

(bumpbot) — Sun, 28 Apr 2024 07:15:48 -0800

Statistics : Posted by bumpbot • on 03 Aug 2016, 04:19 • Replies 8 • Views 7006

Problem Solving (PS) | If k, (k+200), (k+350), and 15*K are all multiples of P, the

(colfer) — Sun, 28 Apr 2024 07:04:06 -0800

If you didn’t know the fact that “if a number is factor of two digits P and Q , it is a factor of P+Q and P-Q” you can work it out logically.
P is factor of K+200 means (K+200)/P should be an integer . We know K/P is an integer since K is a multiple of P. Therefore 200/P must be an integer. Similarly 350/P must be an integer. Only 25 meets both the criteria from the given numbers

Posted from my mobile device

Statistics : Posted by colfer • on 20 Jun 2014, 00:39 • Replies 9 • Views 8297

GMAT Club Tests | Re: M30-02

(Bunuel) — Sun, 28 Apr 2024 06:42:43 -0800

Rebaz wrote:

Bunuel wrote:

OfficialSolution:

In how many ways can nine family members, consisting of four grandparents and five grandchildren (three brothers and two sisters), be arranged around a circular table so that the two sisters sit next to each other and are positioned immediately between two of the brothers?

A. 120
B. 480
C. 1440
D. 2880
E. 8640

Consider treating two brothers and two sisters as a single unit, represented as {BSSB}.

With this grouping, we have a total of 6 units: {G}, {G}, {G}, {G}, {B}, and {BSSB}, where {G} represents a grandparent and {B} represents a brother outside the unit.

These 6 units can be arranged around a circular table in$(6-1)!=5!$ ways.

Next, we'll analyze the {BSSB} unit in more detail:

We can choose 2 brothers out of the 3 for the unit in$C^2_3=3$ ways.

Within the unit, these selected brothers can be arranged in 2! ways, such as$ \{B_1, S, S,B_2\}$ or$ \{B_2, S, S,B_1\}$ .

Similarly, the sisters within the unit can be arranged in 2! ways, either[m] \{B,
...

Statistics : Posted by Bunuel • on 16 Sep 2014, 01:45 • Replies 12 • Views 17959

Problem Solving (PS) | Re: K = 10^26 + 2^26, and K is a multiple of 2^n but NOT a multiple of 2

(vraju87) — Sun, 28 Apr 2024 06:27:35 -0800

Bunuel wrote:

vraju87 wrote:

Could anyone please explain how we can say with certainity that($5^{26}$ +1) will not have a power of 2 greater than 1.Thanks!

Good question.

First ofall:

Divisibility rule for$2^n$:

An integer is divisible by 2 if its last digit is divisible by 2.

An integer is divisible by 4 if its last two digits is divisible by 4.

An integer is divisible by 8 if its last three digits is divisible by 8.

...

Generally, an integer is divisible by$2^n$ if its last$n$ digits is divisible by$2^n$.

Next, 5 raised to any positive integer power greater than 1 ends with 25. Thus, 5^26 + 1 = ...25 + 1 = ...26. Since 26 is not divisible by 4, then 5^26 + 1 is not divisible by any power of 2 greater than 1.

Hope it'sclear.

Thank you for the clear explanation!
...

Statistics : Posted by vraju87 • on 12 Aug 2020, 09:32 • Replies 7 • Views 3797

Problem Solving (PS) | Re: If one of two parallel lines has 7 points on it and the other has 8

(Bunuel) — Sun, 28 Apr 2024 05:55:13 -0800

waddap wrote:

I have a questionr regarding this one. Dont we need to divide 364 by 2 as a triangle ACB is the same as ABC etc.? Or am I missingsomething

Hope below wouldhelp.

If one of two parallel lines has 7 points on it and the other has 8 points, how many distinct triangles can be formed using these points as vertices?

A. 455
B. 364
C. 196
D. 168
E.56

Approach#1:

There are two types of triangles that can be formed:

1. Triangles with two vertices on the line with 8 points and the third vertex on the line with 7 points:$C^2_8*C^1_7=28*7=196$ ;

2. Triangles with two vertices on the line with 7 points and the third vertex on the line with 8 points:$C^2_7*C^1_8=21*8=168$ ;

Total number of triangles:$196+168=364$.

Approach#2:

Any three distinct points chosen from the total of$8+7=15$ points will form a triangle, except for the cases where the three points are collinear.

Therefore, the total number of triangles can be calculated as$C^3_{15}-(C^3_8+C^3_7)=455-(56+35)=364$ . Here,[m]
...

Statistics : Posted by Bunuel • on 25 Oct 2022, 01:22 • Replies 3 • Views 781

Problem Solving (PS) | A number n can be written as the product of four prime numbers

(GMATinsight) — Sun, 28 Apr 2024 05:45:09 -0800

delphsan wrote:

A number n can be written as the product of four primer numbers, exactly two of which are the same. How many different positive divisors does n have, including 1 and n?

A. 5
B. 8
C. 9
D. 12
E.16

$ n =a^2*b*c$ where a, b and c are distinct primenumber

CONCEPT : If$ N =a^p*b^q*c^r...$
where a, b, c... are distinct primes
Number of factors of$ N =(p+1)*(q+1)*(r+1)*...$

i.e. Factors of $ n =a^2*b*c$ will be (2+1)*(1+1)*(1+1) = 12

Answer: OptionD

[spoiler=]

Get the VIDEO solutions of ALL QUANT problems of "GMAT Official Advanced Questions"here.

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Statistics : Posted by GMATinsight • on 25 Apr 2024, 16:18 • Replies 2 • Views 179

GMAT Club Tests | M20-32

(Bunuel) — Sun, 28 Apr 2024 05:42:16 -0800

Smriti5645 wrote:

well, please explain -
10*1/4 - x*1/5 = 1
why this equation is equals to 1,
thanks.

Posted from my mobile device

1 there represents the job done. Specifically, 1 pool is filled while water equal to 10*1/4 = 2.5 of the pool's capacity is poured in, and the amount of water equal to x*1/5 of the pool's capacity is drained out.

Statistics : Posted by Bunuel • on 16 Sep 2014, 01:09 • Replies 6 • Views 28483

Problem Solving (PS) | Last Year a Company Gave Bonuses to a number of employees

(GMATinsight) — Sun, 28 Apr 2024 05:40:49 -0800

Fish181 wrote:

Last Year a company gave bonuses to a number of employees, but only in the three amounts of $750, $1500, and $7,350. If the total amount of the bonuses was $64800 and each of the three amounts was given to at least one employee, what is the fewest number of bonuses that the company could have given to employees last year?

A 10
B 11
C 12
D 13
E14

Three amounts of Bonus are $750, $1500, and $7,350

Total Bonus = $64800

i.e $750a + $1500b + $7,350c= $64800

Now we need to find$ (a+b+c)_{Min} =?$

i.e $750a + $1500b + $7,350c = $64800
i.e. $75a + $150b + $7,35c = $6480

i.e. 5a + 10b + 49c =432

IMPORTANT: Now to minimize a+b+c, the value of c MUST be Maximized so that values of a and b are theleast

Also, 5a + 10b = 432- 49c

IMPORTANT: also, 5a+10b must be multiple of 5 so we need to fund a multiple of 49 (i.e. 49c) which when subtracted from 432 leaves a result that is divisible by5

IMPORTANT: so the unit digit of 49c must be either 2 or7

for max value of x=8,
...

Statistics : Posted by GMATinsight • on 27 Apr 2024, 12:57 • Replies 2 • Views 105

GMAT Club Tests | Re: M15-28

(Bunuel) — Sun, 28 Apr 2024 05:31:36 -0800

thanhtra01011 wrote:

I think the question is wrong. How can Sep, Oct and Nov be in autumn?

In the Northern Hemisphere, the autumn months are September, October, and November.

Statistics : Posted by Bunuel • on 16 Sep 2014, 00:56 • Replies 5 • Views 17131

Problem Solving (PS) | If x = 4^3^(1/2) and y = 3*5^(1/2) , which of the following is the

(GMATinsight) — Sun, 28 Apr 2024 05:25:55 -0800

Danou wrote:

If$ x =4\sqrt{ 3}$ and$y=3\sqrt{5}$ , which of the following is the value of$\frac{ x^4 - y^4 }{ x^2 -y^2}$ ?

A. -93
B. -3
C. 3
D. 27
E.93

Show Spoiler

Attachment:

Capture question.JPG

$ x =4\sqrt{ 3}$ and$y=3\sqrt{5}$

$\frac{ x^4 - y^4 }{ x^2 -y^2} =\frac{ (x^2 - y^2)*(x^2 + y^2) }{ x^2 -y^2} = (x^2 +y^2)$

$ (x^2 + y^2) = (4√3)^2 + (3√5)^2) = 16*3 + 9*5 =93$

Answer: OptionE
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Statistics : Posted by GMATinsight • on 27 Apr 2024, 17:40 • Replies 4 • Views 160

Problem Solving (PS) | Which of the following is equal to (1+2+3)^2(2+3)^2

(GMATinsight) — Sun, 28 Apr 2024 05:21:34 -0800

Danou wrote:

Which of the following is equal to$(1+√2+√3)^2−(√2+√3)^2$ ?

A. 1
B. 2
C. -1 + 2√2
D. 1 + 2√2+2√3
E. 2+ 2√2+2√3

Show Spoiler

Attachment:

Capture question 2.JPG

$(1+√2+√3)^2−(√2+√3)^2$

Knowing that √2 = 1.4 and √3 = 1.7, I LOVE to approximate such values which are smaller and easiertoo

i.e. $ (1+√2+√3)^2−(√2+√3)^2 = (1+1.4+1.7)^2−(1.4+1.7)^2 = (4.1)^2−(3.1)^2 ≈ 16-9 ≈7$

A. 1NO
B.2 NO
C. -1 + 2√2 = -1+2.8 =1.8 NO
D. 1 + 2√2+2√3 = 1+2.8+3.4 = 7.2YES
E. 2 + 2√2+2√3 = 2+2.8+3.4= 8.2 NO

Answer: OptionE
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GMAT Club Forum - Forums > Quantitative Questions

Problem Solving (PS) | Re: What is the sum of all possible solutions to the equation (2x^2-x-9)^

Problem Solving (PS) | Re: In how many ways can 4 people be divided into 2 groups of 2 people eac

Problem Solving (PS) | Re: In how many ways can we put 4 different balls in 3 different boxes whe

Problem Solving (PS) | Re: If x^2 = x + 1, which of the following is equal to x^3 ?

Problem Solving (PS) | Re: What is the remainder when 7^548 is divided by 10?

Problem Solving (PS) | Re: What is the remainder when 1! + 2! + 3! 100! is divided by 18?

Problem Solving (PS) | Re: A box contains 10 pairs of shoes (20 shoes in total). If two

Problem Solving (PS) | Re: (6^14*5^13) - (6^13*5^14) =

Problem Solving (PS) | Re: The retail price of a sweater is $32. If the store can sell the sweate

Problem Solving (PS) | Re: Ten strips of paper are numbered from 1 to 10 and placed in a bag. If

Problem Solving (PS) | Re: Set A consists of the values 1, 2, and 3. Set B consists of the values

Problem Solving (PS) | Re: A computer retailer sells only TFT and LCD monitors. In the graph abov

Problem Solving (PS) | Re: In how many ways can the letters of the word "COMPUTER" be arranged if

Problem Solving (PS) | Re: If n is a negative integer and q is a positive integer, then there is

Quantitative Questions | Re: Quant Question of the Day Chat

Problem Solving (PS) | Re: ­If b > 0, x = [square_root]b+9[/square_root], and y = [square_root]b

Problem Solving (PS) | Re: A certain company's yearly revenue was 20% less in 2005 than in 2004.

Problem Solving (PS) | ­­When it operates at its own constant rate, hose A can fill an empty

Problem Solving (PS) | Re: An Ameba is an organic life form that divides into two Amebas each rou

Problem Solving (PS) | Re: Let s be the set of all 6-digit numbers of the form 54xy12, where each

Problem Solving (PS) | Re: A committee of 10 members consists of men and women. If two members of

Problem Solving (PS) | Re: An electrical appliances store sold this month 400% more than the aver

Problem Solving (PS) | Re: A closed aluminum rectangular box has inner dimensions x centimeters

Problem Solving (PS) | Re: Three surgeons - Anna, Claire, and Diane - are asked to perform an eme

Problem Solving (PS) | Re: In how many ways can 6 different letters be posted in 3 letterboxes su

Problem Solving (PS) | Re: If the tens digit of the positive integer x and the tens digit of the

Quantitative Questions | Re: How do you memorize formulas?

Problem Solving (PS) | Re: If P is a prime number greater than 5, what is the remainder when P^2

Problem Solving (PS) | If k, (k+200), (k+350), and 15*K are all multiples of P, the

GMAT Club Tests | Re: M30-02

Problem Solving (PS) | Re: K = 10^26 + 2^26, and K is a multiple of 2^n but NOT a multiple of 2

Problem Solving (PS) | Re: If one of two parallel lines has 7 points on it and the other has 8

Problem Solving (PS) | A number n can be written as the product of four prime numbers

GMAT Club Tests | M20-32

Problem Solving (PS) | Last Year a Company Gave Bonuses to a number of employees

GMAT Club Tests | Re: M15-28

Problem Solving (PS) | If x = 4^3^(1/2) and y = 3*5^(1/2) , which of the following is the

Problem Solving (PS) | ­Which of the following is equal to (1+2+3)^2(2+3)^2

Problem Solving (PS) | Re: (6^145^13) - (6^135^14) =

Problem Solving (PS) | Re: If b > 0, x = [square_root]b+9[/square_root], and y = [square_root]b

Problem Solving (PS) | When it operates at its own constant rate, hose A can fill an empty

Problem Solving (PS) | Which of the following is equal to (1+2+3)^2(2+3)^2