Practice Questions on Probability
Aptitude Questions and Answers

Easy Probability Question - 6

Q6.

What is the probability that a number selected from numbers 1,2,3,...,30, is prime number, when each of the given numbers is equally likely to be selected?

A.

9/30

B.

8/30

C.

10/30

D.

11/30

 View Ans

Easy Probability Question - 7

Q7.

A bag contains 21 toys numbered 1 to 21. A toy is drawn and then another toy is drawn without replacement.

Find the probability that both toys will show even numbers.

A.

5/21

B.

9/42

C.

11/42

D.

4/21

 View Ans

Easy Probability Question - 8

Q8.

A five-digit number is formed by using digits 1, 2, 3, 4 and 5 without repetition. What is the probability that the number is divisible by 4?

A.

1/5

B.

5/6

C.

4/5

D.

None of these

 View Ans

Easy Probability Question - 9

Q9.

A bag contains 5 red and 3 green balls. Another bag contains 4 red and 6 green balls. If one ball is drawn from each bag.

Find the probability that one ball is red and one is green.

A.

19/20

B.

17/20

C.

8/10

D.

21/40

 View Ans

Easy Probability Question - 10

Q10.

$A$ speaks truth in 75% of cases and $B$ in 80% of cases. In what percent of cases are they likely to contradict each other in narrating the same event?

A.

35%

B.

5%

C.

45%

D.

22.5%

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