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

March 23, 2022

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Maths Problems

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

(D) 0.18

Answer : option (C)

Solution :

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