1.

There are 7 people in a room . 4 have exactly 3 siblings while 3 have exactly 1 sibling. If 2 of the 7 are chosen , find the probability that they are not siblings .

Answer» There are 7 people in a room . 4 have exactly 3 siblings while 3 have exactly 1 sibling. If 2 of the 7 are chosen , find the probability that they are not siblings .


Discussion

No Comment Found