 
<translate> Enwere ike ịhazi akwụkwọ iri n'ụzọ iri! were akwụkwọ abụọ a were dị ka ụzọ abụọ mgbe ahụ ọnụọgụ nke ụzọ dị mma iji jikọta akwụkwọ abụọ a ọnụ bụ 9! 2! Ihe ga - eme ma ọ bụrụ na e gbuo ya bụ: (C) <eng> 10 books can be rearranged in 10! ways consider the two books taken as a pair then number of favourable ways of getting these two books together is 9! 2!
Required probability = 1/5 The answer: (C). 