Questions
Two integers are selected at random from integers 1 to 11. If the sum is even then the probability that both numbers are odd is
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Correct option is B
Sum even = both even or both odd n(A)= 5C2+6C2 n(A∩B) = 6C2 P(B/A) = n(A∩B)n(A) = 6C25C2+6C2 = 1510+15 = 35 Required Probability is 35Similar Questions
Suppose E and F are two events of a random experiment. If the probability of occurence of E is
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