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gmatophobia
PS Question 1 - April 21 If |-x/3 + 1| < 2, which of the following must be true? A. x > 0 B. x < 8 C. x > -4 D. 0 < x < 3 E. None of the above Source: Other (Jamboree) | Difficulty: Hard
The simplification of equation in question results in:
-3<x<9

although it overshoots the required range, Option C covers the entire range as asked in the question.
So going with option C ?
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Karan0912
B
I know it’s unimportant to calculate values in DS, but what percentage of people attended the show on Saturday ? Just want to verify if I’m getting the right answer...
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AbhinavKumar - Realized that , I misread your question

If your question is "What percentage of people attended the show ONLY on Saturday", the answer is 30 (this is what I have responded to)

If your question is "What percentage of people attended the show on Saturday" , :dontknow:
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Thanks, I asked about "What percentage of people attended the show ONLY on Saturday". it is indeed 30 percent
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DS Question 1 - April 21 A music festival took place over two days, Saturday and Sunday. What percent of attendees only attended on Saturday? (1) 40% of attendees attended both days. (2) 70% of attendees attended on Sunday. Source: Vertias Prep | Difficulty: Hard

gmatophobia
PS Question 1 - April 21 If |-x/3 + 1| < 2, which of the following must be true? A. x > 0 B. x < 8 C. x > -4 D. 0 < x < 3 E. None of the above Source: Other (Jamboree) | Difficulty: Hard

DS Question 1 - April 22

What is the value of a + b?

(1) The difference between 3.ab4 and 4.b4a after rounding them to tenth place is 1.5

(2) Sum of 3.ab4 and 4.b4a after rounding them to hundredth place is 7.80

Source: Other | Difficulty: Hard

PS Question 1 - April 22

At a certain party hall, it is observed that in every party at least 75% of the people take coffee, at least 30% of the people take tea and between 20% to 50% people take cold drink. Each person in the party takes at least one of the beverages but no single person takes all three of them. What is the sum of the minimum possible percentage and maximum possible percentage of people who take both coffee and tea in a party?

A. 85
B. 95
C. 100
D. 105
E. 120

Source: GMAT Whiz | Difficulty: Hard
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PS Question 1 - April 22 At a certain party hall, it is observed that in every party at least 75% of the people take coffee, at least 30% of the people take tea and between 20% to 50% people take cold drink. Each person in the party takes at least one of the beverages but no single person takes all three of them. What is the sum of the minimum possible percentage and maximum possible percentage of people who take both coffee and tea in a party? A. 85 B. 95 C. 100 D. 105 E. 120 Source: GMAT Whiz | Difficulty: Hard
A

Lets try to simplify and understand.

Important information in que stem : All 3 and None of the 3 = 0.

For maximising both Tea and Coffee, we need to minimize Cold drink. Fair enough? So minimum % of people who consume cold drink is 20% so the rest 80% can be attributed to both Tea and coffee (Here to maximise consumption of both Tea and Coffee we are assuming Only Tea and Only Coffee as zero).

Now let’s find the minmum value. This is slightly tricky. For minimising both Tea and Coffee, we need to maximise others. The tea and coffee consumption is atleast 75% and 30% respectively so there is atleast 5% overlap between Tea and Coffee, which is basically Both Teas and Coffee group. Now this is atleast 5% and it could be bigger number but our objective is to minimize it. We can do that if we make the rest 95% as follows: (50% as cold drink group (since this is max.) and rest 45% as Only Tea and Only Coffee group).

Now add the max and min, you get 80 + 5 = 85.
Option A is correct.
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DS Question 1 - April 22 What is the value of a + b? (1) The difference between 3.ab4 and 4.b4a after rounding them to tenth place is 1.5 (2) Sum of 3.ab4 and 4.b4a after rounding them to hundredth place is 7.80 Source: Other | Difficulty: Hard

gmatophobia
PS Question 1 - April 22 At a certain party hall, it is observed that in every party at least 75% of the people take coffee, at least 30% of the people take tea and between 20% to 50% people take cold drink. Each person in the party takes at least one of the beverages but no single person takes all three of them. What is the sum of the minimum possible percentage and maximum possible percentage of people who take both coffee and tea in a party? A. 85 B. 95 C. 100 D. 105 E. 120 Source: GMAT Whiz | Difficulty: Hard

DS Question 1 - Apr 24

If |y| > |x|, is x – y < 0?

(1) |x| + |y| > |x - y|
(2) x + y < 0

Source: GMATPrepNow | Difficulty: Hard

PS Question 1 - Apr 24

The function F is defined for all positive integers n by the following rule: f(n) is the number of positive integer each of which is less than n, and has no positive factor in common with n other than 1. If p is any prime number then f(p)=

A. p-1
B. p-2
C. (p+1)/2
D. (p-1)/2
E. 2
Source: GMAT Paper Tests | Difficulty: Medium
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Karan0912
Is it A?
Yes I think it is A.

If P is a prime number (divided by 1 and p), it means that All number that came before it doesn’t have any commun divisor with p. And since 0 is not include (positive number ) we have p-1 number that fit to the description above.
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no questions for 25th April ? :(
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no questions for 25th April ? :(
I was planning to give everyone a break today :lol: , but because you asked for it - hold on !

gmatophobia
DS Question 1 - Apr 24 If |y| > |x|, is x – y < 0? (1) |x| + |y| > |x - y| (2) x + y < 0 Source: GMATPrepNow | Difficulty: Hard

gmatophobia
PS Question 1 - Apr 24 The function F is defined for all positive integers n by the following rule: f(n) is the number of positive integer each of which is less than n, and has no positive factor in common with n other than 1. If p is any prime number then f(p)= A. p-1 B. p-2 C. (p+1)/2 D. (p-1)/2 E. 2 Source: GMAT Paper Tests | Difficulty: Medium

PS Question 1 - Apr 25

If operation p # q is defined for all integers p and q, such that t p#q = p + q + pq, which of the following must be true?

I. p#q = q#p
II. p#1 = 2p + 1
III. p#(q#r) = (p#q)#r

A. I only
B. I and II only
C. I and III only
D. II and III only
E. I, II, and III

Source: Others | Difficulty: Hard

DS Question 1 - Apr 25

If y > x, is y > 64

(1) x has 7 factors(all even but one) and is divisible by only one prime number.

(2) |y-64| > |x-64|

Source: eGMAT | Diffculty: Hard
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gmatophobia
PS Question 1 - Apr 25 If operation p # q is defined for all integers p and q, such that t p#q = p + q + pq, which of the following must be true? I. p#q = q#p II. p#1 = 2p + 1 III. p#(q#r) = (p#q)#r A. I only B. I and II only C. I and III only D. II and III only E. I, II, and III Source: Others | Difficulty: Hard
E

gmatophobia
DS Question 1 - Apr 25 If y > x, is y > 64 (1) x has 7 factors(all even but one) and is divisible by only one prime number. (2) |y-64| > |x-64| Source: eGMAT | Diffculty: Hard
i dont know. how to solve this?
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reinata.hanna
i dont know. how to solve this?
Which statement are you stuck with ?
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reinata.hanna
i dont know. how to solve this?
Both statements are alone sufficient to answer. S1 implies that x is 64. Hence y>64.
S2 can be broken into 4 cases based on x and y greater or less than 64. You would be able to discard 2 out of these 4 because those two will give you y<x that is not possible from the question stem. Hence statement 2 is sufficient.

gmatophobia
PS Question 1 - Apr 25 If operation p # q is defined for all integers p and q, such that t p#q = p + q + pq, which of the following must be true? I. p#q = q#p II. p#1 = 2p + 1 III. p#(q#r) = (p#q)#r A. I only B. I and II only C. I and III only D. II and III only E. I, II, and III Source: Others | Difficulty: Hard
E
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S1 implies that x is 64 >> how do we arrive at this conclusion?

S2 can be broken into 4 cases based on x and y greater or less than 64. >>> shouldn’t it be

"S2 can be broken into 3 cases (after omitting y<x) :
x<64<y (64 is between x and y) >> not sufficient to know which gap is nearer to 64
x=64<y (64 = x) >> S2 is true, bcs |y=64| > 0 and |x=64| = 0
x<64=y (64 = y) >> S2 is false, bcs |y=64| = 0 and |x=64| > 0

and because we have 3 possible case, isn’t S2 insufficient to draw a conclusion?
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oh and there is even 2 more possible cases:

64<x<y >> S2 is true as gap of 64 to x will always be smaller than the gap of 64 to y
x<y<64 >> S2 is false as gap of 64 to x will always be greater than the gap of 64 to y

more reasons to conclude that S2 is insufficient, right?
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I need support in giving online test which is on GMAT pattern. Is anyone who can help me on this
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amy9999
I need support in giving online test which is on GMAT pattern. Is anyone who can help me on this
What is it that you’re struggling to understand?
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