Question

Twins can be identical boys, identical girls, non-identical boys, non-identical girls or one boy and one girl. What are the possible combinations with triplets?

Answer 1

See explanation

Explanation:

Twins can be identical boys, identical girls, non-identical boys, non-identical girls or one boy and one girl.

For the triplets, first list all possibilities with children sexes:

3 boys

3 girls

2 boys and 1 girl

2 girls and 1 boy.

Hence, all possible combinations are:

3 identical boys

2 identical boys and 1 non-identical boy

3 non-identical boys

3 identical girls

2 identical girls and 1 non-identical girl

3 non-identical girl

2 identical boys and girl

2 non-identical boys and girl

2 identical girls and boy

2 non-identical girls and boy