JEE Mains · Maths · STD 11 - 14. probability
Two different families \(A\) and \(B\) are blessed with equal number of children. There are \(3\) tickets to be distributed amongst the children of these families so that no child gets more than one ticket . If the probability that all the tickets go to the children of the family \(B\) is \(\frac {1}{12}\) , then the number of children in each family is?
- A \(4\)
- B \(6\)
- C \(3\)
- D \(5\)
Answer & Solution
Correct Answer
(D) \(5\)
Step-by-step Solution
Detailed explanation
Let the number of children ineach familybe \(x\). Thus the total number of children in both the families are \(2 x\) Now, it is given that \(3\) tickets are distributed amongst the children of these two families. Thus, the probability that all the three tickets go to the…
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