Q.

5 boys and 3 girls sit in a row at random. The probability that no two girls sit together is

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a

514

b

325

c

127

d

1111

answer is A.

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Detailed Solution

5 Boys  + 3 Girls⇒n(S)=8!  n(A)=5!.P2   6P(A)=5!.P2   68!=514
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