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CGP EDU Academic Team
Published on: August 13, 2026
Two persons A and B have equal number of sons. There are three cinema tickets which are to be distributed among sons of A and B. The probability that all the tickets go to sons of A is 
. The number of sons to each of them is
Text Solution
Verified by ExpertsThe correct answer is:
A
3
Let A, B have n sons each
Total cases = 2n C 3
Favorable cases = n C 3
Probability= 
10 (n 2 - 3n + 2) = (4n 2 - 6n + 2)
10n 2 - 30n + 20 = 4n 2 - 6n + 2
6n 2 - 24n + 18 = 0
6 (n 2 - 4n + 3) = 0
n = 1, 3 (n = 1 is rejected)
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