Practice Questions on Probability
Aptitude Questions and Answers

Moderate Probability Question - 26

Q26.

A box contains 9 red toys, 7 green toys and 9 blue toys. Each ball is of a different size. The probability that the red ball being selected is the smallest red toy, is:

A.

1/9

B.

2/21

C.

1/25

D.

6/25

 View Ans

Moderate Probability Question - 27

Q27.

If five dice are thrown simultaneously, what is the probability of getting the sum as seven?

A.

\(\dfrac{15}{6^5}\)

B.

\(\dfrac{11}{6^5}\)

C.

\(\dfrac{10}{6^5}\)

D.

\(\dfrac{5}{6^5}\)

 View Ans

Moderate Probability Question - 28

Q28.

There are three events $A, B$ and $C$, one of which must and only can happen. If the odds are $8:3$ against $A, 5:2$ against $B$, the odds against $C$ must be:

A.

$13:7$

B.

$3:2$

C.

$43:34$

D.

$43:77$

 View Ans

Moderate Probability Question - 29

Q29.

If the probability that $X$ will live 15 year is 7/8 and that $Y$ will live 15 years is 9/10, then what is the probability that both will live after 15 years?

A.

1/20

B.

63/80

C.

1/5

D.

None of these

 View Ans

Moderate Probability Question - 30

Q30.

Four boys and three girls stand in queue for an interview. The probability that they stand in alternate positions is:

A.

1/35

B.

1/34

C.

1/17

D.

1/68

 View Ans
Hide
 
 
 

Number formats

Decimals
Lofoya.com   2016

You may drag this calculator