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 1/12 , then the number of
children in each family is :
3
4
5
6
As we have learned
Theorem of Combination -
Each of the different groups or selection which can be made by taking r things from n things is called a combination.
- wherein
Where
Option 1)
3
This is incorrect
Option 2)
4
This is incorrect
Option 3)
5
This is correct
Option 4)
6
This is incorrect
Study 40% syllabus and score up to 100% marks in JEE