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A group of men and women gathered to compete in a marathon. Before the competition, each competitor was weighed and the

A group of men and women gathered to compete in a marathon. Before the competition, each competitor was weighed and the average weight of the female competitors was found to be 120 lbs. What percentage of the competitors were women? (1) The average weight of the men was 150 lb. (2) The average weigh...


A survey was sent to 80 customers, 7 of whom responded. Then the survey was redesigned and sent to another 63 customers,

A survey was sent to 80 customers, 7 of whom responded. Then the survey was redesigned and sent to another 63 customers, 9 of whom responded. By approximately what percent did the response rate increase from the original survey to the redesigned survey? A. 2% B. 5% C. 14% D. 28% E. 63% Answer: E Sou...


If \(x\) and \(y\) are integers and \(2 < x < y,\) does \(y = 16?\)

If \(x\) and \(y\) are integers and \(2 < x < y,\) does \(y = 16?\)

(1) The GCF of \(x\) and \(y\) is \(2.\)
(2) The LCM of \(x\) and \(y\) is \(48.\)

Answer: C

Source: Veritas Prep


If \(\left(\dfrac54\right)^{-n} < 16^{-1},\) what is the least integer value of \(n?\)

If \(\left(\dfrac54\right)^{-n} < 16^{-1},\) what is the least integer value of \(n?\)

A. 12
B. 13
C. 14
D. 15
E. 16

Answer: B

Source: Magoosh


Is \(x^2 + y^2 > 100?\)

Is \(x^2 + y^2 > 100?\)

(1) \(2xy < 100\)

(2) \((x + y)^2 > 200\)

Answer: B

Source: Veritas Prep

by M7MBA

Sun Jun 13, 2021 9:27 am
Forum: Data Sufficiency
Topic: Is \(x^2 + y^2 > 100?\)
Replies: 0
Views: 31

What is the surface area of rectangular solid \(y?\)

What is the surface area of rectangular solid \(y?\)

(1) The dimensions of one face of rectangular solid \(y\) are \(2\) by \(3.\)
(2) The area of another face of rectangular solid \(y\) is \(6.\)

Answer: E

Source: Princeton Review

by M7MBA

Sun Jun 13, 2021 9:22 am
Forum: Data Sufficiency
Topic: What is the surface area of rectangular solid \(y?\)
Replies: 0
Views: 30

If \(an \ne 0\) and \(n\) is a positive integer, is \(n\) odd?

If \(an \ne 0\) and \(n\) is a positive integer, is \(n\) odd?

(1) \(a^n + a^{n + 1} < 0\)

(2) \(a\) is an integer.

Answer: C

Source: Manhattan GMAT

by M7MBA

Sun Jun 13, 2021 9:16 am
Forum: Data Sufficiency
Topic: If \(an \ne 0\) and \(n\) is a positive integer, is \(n\) odd?
Replies: 0
Views: 29

If \(m\) is the square of integer \(n\) and \(m\) is divisible by \(98, m\) must also be divisible by:

If \(m\) is the square of integer \(n\) and \(m\) is divisible by \(98, m\) must also be divisible by:

I. \(28\)
II. \(196\)
III. \(343\)

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

Answer: C

Source: Manhattan GMAT


\(P=a^4\cdot b^7,\) where \(a^2=1\) and \(b^2=9.\) What is the value of \(P?\)

\(P=a^4\cdot b^7,\) where \(a^2=1\) and \(b^2=9.\) What is the value of \(P?\)

(1) \(a < 0\)

(2) \(b < 0\)

Answer: B

Source: Magoosh


What is the probability of getting a number on the first throw greater than that on the second throw when a dice is

What is the probability of getting a number on the first throw greater than that on the second throw when a dice is thrown twice?

A. \(\dfrac16\)

B. \(\dfrac23\)

C. \(\dfrac5{12}\)

D. \(\dfrac7{12}\)

E. \(\dfrac56\)

Answer: C

Source: Manhattan GMAT


If \(a\) and \(b\) are nonzero integers, is \(a^b\) an integer?

If \(a\) and \(b\) are nonzero integers, is \(a^b\) an integer?

(1) \(b^a\) is negative.
(2) \(a^b\) is negative.

Answer: E

Source: Veritas Prep

by M7MBA

Sun Jun 13, 2021 8:57 am
Forum: Data Sufficiency
Topic: If \(a\) and \(b\) are nonzero integers, is \(a^b\) an integer?
Replies: 0
Views: 27

If \(b \ne 0,\) and \(1 - \dfrac{a}{b} > 3,\) which of the following must be true?

If \(b \ne 0,\) and \(1 - \dfrac{a}{b} > 3,\) which of the following must be true?

I. \(-a > 2b\)
II. \(a < 0\)
III. \(\dfrac{a^3}{b^3} < 0\)

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

Answer: C

Source: Veritas Prep


If \(|a + 5| = |b + 5|\) what is the value of \(a + b?\)

If \(|a + 5| = |b + 5|\) what is the value of \(a + b?\)

(1) \(b > 5\) and \(a < 5\)

(2) \(b = 10\)

Answer: A

Source: Veritas Prep

by M7MBA

Sun Jun 13, 2021 8:49 am
Forum: Data Sufficiency
Topic: If \(|a + 5| = |b + 5|\) what is the value of \(a + b?\)
Replies: 0
Views: 30

Seven children — A, B, C, D, E, F, and G — are going to sit in seven chairs in a row. Child A has to sit next to both B

Seven children — A, B, C, D, E, F, and G — are going to sit in seven chairs in a row. Child A has to sit next to both B & G, with these two children immediately adjacent to her on either side. The other four children can sit in any order in any of the remaining seats. How many possible configuration...


If the average (arithmetic mean) of six different numbers is 25, how many of the numbers are greater than 25?

If the average (arithmetic mean) of six different numbers is 25, how many of the numbers are greater than 25?

(1) None of the six numbers is greater than 50.

(2) Three of the six numbers are 7, 8, and 9, respectively.

Answer: C

Source: Manhattan GMAT