KVPY SX SB Exam 19-Nov-2017 Question Paper

Question : 112 of 120

Marks: +1, -0

In a population of families having three children each, the percentage of population of families having both boys and girls is

Solution:

Probability of 2 Boy & 1 Girl =

3/8

Probability of 1 Girl & 2 Boys =

3/8

Total probability =

3/8+3/8=6/8=75%

Go to Question:

Prev Question

Next Question