Question

Ina family of three children the probability of having at least one boy is

Answer 1

See the sample space is

B B B B B G

G G B G G G

B G B B G G

G B B G B G

{ Here GBB, BBG and so on are not the same events as The girl or boy may be elder or younger }

P ( E) = no. of favourable outcome / Total no. of outcome

P ( at least one boy) = 7 / 8

Hope the solution is clear to you!!

Answer 2

The outcomes are GGG, BBB, GBB,GGB, GBG, BGG, BBG, BGB,

Total outcomes =8

Probability of having at least one boy=7/8

hope this helps you.