Book
Maths Puzzle
Numerical Ability
ten placed are placed at random in a shelf. what is probability that a pair of books will always be together?
Read Solution (Total 1)
9!*2!/10! = 1/5
10 years ago
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Book Other Question
in a party there are 5 couples. out of them, 5 people are chosen at random. find the probability that there are at least two couple?
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