Two numbers are selected at random from the set 1 , 2 , 3 , … … , 13 . If the sum of the selected numbers is even, the probability that both the numbers are odd is

Question

Two numbers are selected at random from the set 1 , 2 , 3 , … … , 13 . If the sum of the selected numbers is even, the probability that both the numbers are odd is, 2 13, 1 2, 7 12, 5 26

MARKS App · Accepted Answer

Prob . = Fav . out comes Total out comes = 7 c 2 7 c 2 + 6 c 2 = 7 12

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