CBSE Class 12-science Answered
Two numbers are selected at random from the numbers 1 to 9. If the sum is even, find the probability that both the numbers are odd.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Let A be the event that both numbers are odd, B be the event that the sum is even and 
be the event that both numbers are odd and sum is even.
From the numbers 1 to 9, 5 numbers (1, 3, 5, 7 & 9) are odd.
The sum of two even or odd numbers is an even number.
and
Required probability = P(A | B) =
Answered by | 04 Jun, 2014, 03:23: PM
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= 0.7. Then find P(A | B) and P(B | A). Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
