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Updated on: 16 Feb 2023, 22:53
Originally posted by gmatophobia on 16 Feb 2023, 22:47.
Last edited by gmatophobia on 16 Feb 2023, 22:53, edited 1 time in total.
Last edited by gmatophobia on 16 Feb 2023, 22:53, edited 1 time in total.
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gmatophobia
DS Question 1 - Feb 15 Set D is a new set created by combining all the terms of Sets A, B, and C. No other terms are added to Set D other than those in Sets A, B, and C. What is the median of Set D? (1) Sets A, B, and C each have a median of 125. (2) Sets A, B, and C each have the same number of terms. Source: Kaplan | Difficulty: Hard
A
gmatophobia
PS Question 1 - Feb 15 The numbers in set P denote the distance of certain positive integers from -1 on the number line. The numbers in set Q denote the distance of the same integers from 1 on the number line. Which of the following statements is true about the standard deviation of the sets P and Q? A. Standard Deviation (P) = Standard Deviation (Q) B. Standard Deviation (P) = - Standard Deviation (Q) C. Standard Deviation (P) = Standard Deviation (Q) + 2 D. Standard Deviation (P) = 2* Standard Deviation (Q) E. None of the above Source: Other | Difficulty: Medium
A
DS Question 1 - Feb 17
If A and B are integers, is N an even integer?
(1) 11A + 4B = N
(2) 5A – 4B = 2N
Source: GMATPrepNow | Difficulty: Medium
PS Question 1 - Feb 17
If the circus were to sell all of its 220 tickets for this month’s performance at its usual price, the revenue from sales would be 10% greater than that collected last month. If the circus raised the ticket price by 5% and sold only 200 tickets as a result, what percent less would last month’s revenue be compared to this month’s revenue?
A. 2
B. 5
C. 100/21
D. 110/20
E. 9/4
Source: GMAT Club Tests | Difficulty: Hard
18 Feb 2023, 00:35
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gmatophobia
DS Question 1 - Feb 17 If A and B are integers, is N an even integer? (1) 11A + 4B = N (2) 5A – 4B = 2N Source: GMATPrepNow | Difficulty: Medium
individual staements are not sufficient,But, if we add these statements: 16A = 3N
here, if A is multiple of 3 then we get "yes" otherwise we get "NO"
But, if we subtract the statements: -6A - 8B = N , so, N is even
both cases are conflicting when combined .. is answer E ?
18 Feb 2023, 08:01
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AbhinavKumar
individual staements are not sufficient, But, if we add these statements: 16A = 3N here, if A is multiple of 3 then we get "yes" otherwise we get "NO" But, if we subtract the statements: -6A - 8B = N , so, N is even both cases are conflicting when combined .. is answer E ?
Why do you think its E ?From Statement 1, we can conclude that N is an integer as N is a sum of two integers.
16A = 3N
The LHS is an even number, hence, N has to be even.
Do you see any issue with this reasoning ?
