Quantitative Aptitude Ques 1477

Question: In a simultaneous throw of a pair of dice, find the probability of getting prime numbers on both the faces.

Options:

A) $ \frac{14}{36} $

B) $ \frac{11}{36} $

C) $ \frac{1}{4} $

D) $ \frac{11}{15} $

Show Answer

Answer:

Correct Answer: C

Solution:

  • $ n(S)=6\times 6=36 $ and E = Event of getting prime numbers on both the dice $ ={(2,2)(2,3)(2,5)(3,2)(3,3)(3,5)(5,2)(5,3)(5,5)} $ $ P(E)=\frac{n(E)}{n(S)}=\frac{9}{36}=\frac{1}{4} $
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