Statistics And Probability Question 287
Question: 5 persons A, B, C, D and E are in queue of a shop. The probability that A and E always together, is
Options:
A) $ \frac{1}{4} $
B) $ \frac{2}{3} $
C) $ \frac{2}{5} $
D) $ \frac{3}{5} $
Show Answer
Answer:
Correct Answer: C
Solution:
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Total number of ways $ =5\,! $ Favourable number of ways $ 2\,.\,4\,! $ Hence required probability $ =\frac{2\,.\,4\,!}{5\,!}=\frac{2}{5} $ .
BETA
