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gmatophobia
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Practice Questions Chat 24 Dec 2022, 05:50
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Yusa
E?
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aah ! I guess you’re missing something :(
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gmatophobia
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Practice Questions Chat 24 Dec 2022, 06:16
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PS Question 2 - Dec 24

Set A: {x, x, x, y, y, y, 3x+y, x–y }

If the median of set A is 10 and 0 < x < y, what is the range of set A?

A. 10
B. 20
C. 30
D. 40
E. 60

Source: Magoosh | Difficulty: Medium
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Practice Questions Chat 24 Dec 2022, 07:48
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gmatophobia
aah ! I guess you’re missing something :(
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Can you please expulsin ?
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gmatophobia
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Practice Questions Chat Updated on: 24 Dec 2022, 22:59
Originally posted by gmatophobia on 24 Dec 2022, 22:58.
Last edited by gmatophobia on 24 Dec 2022, 22:59, edited 1 time in total.
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gmatophobia
PS Question 1 - Dec 24 m and n are positive integers. What is the smallest possible value of integer m if m/n = 0.3636363636...? A. 3 B. 4 C. 7 D. 13 E. 22 Source: GMAT Club Tests | Difficulty: Medium
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gmatophobia
DS Question 1 - Dec 24 Company M has two divisions - X and Y. Each division has exactly two types of employees - clerks and managers. Is the ratio of clerks to managers greater for division X than that for division Y? (1) Division X has 20% managers. (2) Company M has 15% managers. Source: Expert’s Global | Difficulty: Medium
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gmatophobia
PS Question 2 - Dec 24 Set A: {x, x, x, y, y, y, 3x+y, x–y } If the median of set A is 10 and 0 < x < y, what is the range of set A? A. 10 B. 20 C. 30 D. 40 E. 60 Source: Magoosh | Difficulty: Medium
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gmatophobia
DS Question 2 - Dec 24 Is x < y < z ? (1) |x-1| < y < z+1 (2) |x+1| < y < z-1 Source: Math Revolution | Difficulty: Hard
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gmatophobia
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Practice Questions Chat 24 Dec 2022, 23:11
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Yusa
Can you please expulsin ?
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St.1 is quite straight forward and its not sufficient.

St.2
y and (z -1 ) are positive number as both lie to the right of |x+1| (modulus is always non negative).

Also, as y < z - 1, we can conclude that z lies right on the number line compared to y.

So, the relative position of y and z on the number line is

----- y ----- z ------

|x + 1| is less than y.

Therefore we can infer that the distance between x and -1 is less than the value of y.

Regardless of which side of -1 ’x’ lies, the value of ’x’ will always be less than the value of y.

We can visualize this by plotting x , y and -1 on the number line.

----- -1 ----- x ----- y ------

----- x ----- -1 ----- y ------

Hence we can conclude that x < y < z

Option B
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Practice Questions Chat 25 Dec 2022, 00:31
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DS Question 1 - Dec 25

If x and y are positive integers, what is the greatest common divisor of x and y?

(1) 2x + y = 73
(2) 5x – 3y = 1

Source: Manhattan GMAT | Difficulty: Hard

PS Question 1 - Dec 25

At a local beach, the ratio of little dogs to average dogs to enormous dogs is 2:5:8. Late in the afternoon, the ratio of little dogs to average dogs doubles and the ratio of little dogs to enormous dogs increases. If the new percentage of little dogs and the new percentage of average dogs are both integers and there are fewer than 30 total dogs at the beach, which of the following represents a possible new percentage of enormous dogs?

A. 25%
B. 40%
C. 50%
D. 55%
E. 70%

Source: Veritas Prep | Difficulty: Hard
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Yusa
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Practice Questions Chat 25 Dec 2022, 05:20
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Can someone explain me how to solve this problem 😥
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mysterymanrog
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Practice Questions Chat Updated on: 25 Dec 2022, 05:25
Originally posted by mysterymanrog on 25 Dec 2022, 05:24.
Last edited by mysterymanrog on 25 Dec 2022, 05:25, edited 1 time in total.
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Yusa
Can someone explain me how to solve this problem 😥
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There js probably a discussion but you would do the following

(x+y)^2-(x-y)^2

expand it to
x^2+2xy+y^2-(x^2-2xy+y^2)
Simplify into 4xY
So really its 2^4xy
xy=1, so 2^4 which is just 16
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Practice Questions Chat Updated on: 26 Dec 2022, 00:42
Originally posted by gmatophobia on 26 Dec 2022, 00:39.
Last edited by gmatophobia on 26 Dec 2022, 00:42, edited 2 times in total.
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gmatophobia
DS Question 1 - Dec 25 If x and y are positive integers, what is the greatest common divisor of x and y? (1) 2x + y = 73 (2) 5x – 3y = 1 Source: Manhattan GMAT | Difficulty: Hard
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gmatophobia
PS Question 1 - Dec 25 At a local beach, the ratio of little dogs to average dogs to enormous dogs is 2:5:8. Late in the afternoon, the ratio of little dogs to average dogs doubles and the ratio of little dogs to enormous dogs increases. If the new percentage of little dogs and the new percentage of average dogs are both integers and there are fewer than 30 total dogs at the beach, which of the following represents a possible new percentage of enormous dogs? A. 25% B. 40% C. 50% D. 55% E. 70% Source: Veritas Prep | Difficulty: Hard
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D

PS Question 1 - Dec 26

Find the number of trailing zeros in (23!+24!+26!).

A. 2
B. 4
C. 5
D. 8
E. 10

Source: Others | Difficulty: Hard

DS Question 1 - Dec 26

If a, b, and c are integers and a < b < c, are a, b, and c consecutive integers?

(1) The median of {a!, b!, c!} is an odd number.

(2) c! is a prime number.

Source: GMAT Club Tests | Difficulty: Hard
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Practice Questions Chat 26 Dec 2022, 01:29
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gmatophobia
DS Question 1 - Dec 26 If a, b, and c are integers and a < b < c, are a, b, and c consecutive integers? (1) The median of {a!, b!, c!} is an odd number. (2) c! is a prime number. Source: GMAT Club Tests | Difficulty: Hard
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Only factorial who has odd value is 0! or 1! b=0 or 1, but this is clearly not sufficient.

2) c! is prime - only 2! is prime.

3) There are no negative factorials, so b cannot =0. Therefore, a=0 b=1 c=3

Suff
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Practice Questions Chat 26 Dec 2022, 01:33
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Only factorial who has odd value is 0! or 1! b=0 or 1, but this is clearly not sufficient. 2) c! is prime - only 2! is prime. 3) There are no negative factorials, so b cannot =0. Therefore, a=0 b=1 c=3 Suff
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Answer would be B or C?
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Practice Questions Chat 26 Dec 2022, 01:34
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aps326
Answer would be B or C?
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b cannot be sufficient

we only know the value of c - 2

but we know nothing else
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Ohh! My bad, I read a b c are Positive Integers...

For the case a, b, c are Integers answer will be C..

Thanks..!!
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Practice Questions Chat 26 Dec 2022, 02:11
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are gmat test centres noiseless? if not can i use ear plugs?
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Stanindaw
are gmat test centres noiseless? if not can i use ear plugs?
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Yes, they are generally noiseless but also depends on area to area. But, in case they are not, then you are not even allowed to take your water bottle or any kind of paper or pen to your allotted system let alone earplugs.
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Practice Questions Chat Updated on: 26 Dec 2022, 04:56
Originally posted by av1901 on 26 Dec 2022, 04:55.
Last edited by av1901 on 26 Dec 2022, 04:56, edited 1 time in total.
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Stanindaw
are gmat test centres noiseless? if not can i use ear plugs?
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Not sure if it’s the case at every the center or not but I have heard that the Noida center is quite good and they also have headphones for blocking the noise at the test station and also provide you the option for earplugs

I’m sure you can contact the center you schedule at and ask them about similar provisions
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av1901
Not sure if it’s the case at every the center or not but I have heard that the Noida center is quite good and they also have headphones for blocking the noise at the test station and also provide you the option for earplugs
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I believe it depends on the type of center too

Pearson centers have earplugs built in

like they give you dome
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Practice Questions Chat 26 Dec 2022, 06:27
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PS Question 2 - Dec 26

A set of numbers has the property that for any number t in the set, t + 2 is in the set. If -1 is in the set, which of the following must also be in the set?

I. -3
II. 1
III. 5

(A) I only
(B) II only
(C) I and II only
(D) II and III only
(E) I, II , and III

Source: Official Guide | Difficulty: Medium
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Practice Questions Chat 26 Dec 2022, 10:17
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av1901
Not sure if it’s the case at every the center or not but I have heard that the Noida center is quite good and they also have headphones for blocking the noise at the test station and also provide you the option for earplugs
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thanks for the information
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Practice Questions Chat Updated on: 27 Dec 2022, 02:35
Originally posted by gmatophobia on 27 Dec 2022, 02:30.
Last edited by gmatophobia on 27 Dec 2022, 02:35, edited 3 times in total.
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gmatophobia
PS Question 1 - Dec 26 Find the number of trailing zeros in (23!+24!+26!). A. 2 B. 4 C. 5 D. 8 E. 10 Source: Others | Difficulty: Hard
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gmatophobia
DS Question 1 - Dec 26 If a, b, and c are integers and a < b < c, are a, b, and c consecutive integers? (1) The median of {a!, b!, c!} is an odd number. (2) c! is a prime number. Source: GMAT Club Tests | Difficulty: Hard
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gmatophobia
PS Question 2 - Dec 26 A set of numbers has the property that for any number t in the set, t + 2 is in the set. If -1 is in the set, which of the following must also be in the set? I. -3 II. 1 III. 5 (A) I only (B) II only (C) I and II only (D) II and III only (E) I, II , and III Source: Official Guide | Difficulty: Medium
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DS Question 1 - Dec 27

w, x, y and z are positive integers. When w is divided by x, the quotient is y, and the remainder is z. What is the value of z?

(1) x^3 - 3x^2 + 2x = 0

(2) The least common multiple of w and x is 30.

Source: GMATPrepNow | Difficulty: Hard

PS Question 1 - Dec 27

A certain online form requires a 2-digit code for the day of the month to be entered into one of its fields, such as 04 for the 4th day of the month. The code is valid if it is 01, 02, 03, …, 31 and not valid otherwise. The transpose of a code xy is yx. For example, 40 is the transpose of 04. If N is the number of valid codes having a transpose that is not valid, what is the value of N ?

A. 12
B. 13
C. 18
D. 19
E. 20

Source: Official Guide | Difficulty: Hard
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