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Two integers are selected at random from the set{1, 2, ….., 11}.Given that the sum of selected number is even, the conditional probability that both the numbers are even is   

(a)

    

(b)

(c)

(d)



Question ID - 57009 | SaraNextGen Top Answer

Two integers are selected at random from the set{1, 2, ….., 11}.Given that the sum of selected number is even, the conditional probability that both the numbers are even is   

(a)

    

(b)

(c)

(d)

1 Answer
127 votes
Answer Key / Explanation : (a) -

Since sum of two numbers is even so either both are odd or both are even. Hence number of elements in reduced samples space

=5C2+6C2

So required probability=

127 votes


127