GRE Problem Solving Sample Questions Samples

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1.Question

Find the odds in favour that when a number is chosen randomly from 6 to 50 then it is a multiple of 2 and not a multiple of 20.

A. 5:7

B. 1:8

C. 5:6

D. 3:5

E. 7:8

Correct Answer: E

2.Question

The odds that A speaks the truth are 3:2 and the odds that B speaks the truth are 5:3. In what percentage of cases are they likely to contradict each other on an identical point?

A. 50%

B. 53.4%

C. 47.5%

D. 75.5%

E. 33.3%

Correct Answer: C

3.Question

Let A, B and C denote separate generic traits. Suppose the probability that an individual will exhibit trait A is 1/2 and the probability that he exhibits B trait is 3/4 and the probability that he exhibits trait C is 3/5. What is the probability that he exhibits only one of the traits?

A. 1/4

B. 11/40

C. 1/6

D. 17/36

E. 11/36

Correct Answer: B

 

 

4.Question

Four members are to be chosen from a group of 3 women, 2 men and 4 children. Find the probability of selecting exactly 2 children.

A. 3/50

B. 2/25

C. 1/5

D. 10/21

E. 1/50

Correct Answer: D

5.Question

In a lot of 12 washing machines, there are 3 defective pieces. A person has ordered 4 washing machines. Find the probability that all the four are good.

A. 3/50

B. 14/55

C. 28/55

D. 54/55

E. 1/50

Correct Answer: B

GRE Problem Solving Sample Questions Samples

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