Question : A pair of numbers is picked up randomly (without replacement) from the set {1,2, 3,5, 7, 11, 12, 13, 17, 19}. The probability that the number 11 was picked given that the sum of the numbers was even is nearly
(A) 0.1
(B) 0.125
(C) 0.24
(D) 0.18
Answer : option (C)
Solution :
