A couple decided to have 4 children. What is the probability that they will have at least two boys?

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asked Sep 9, 2015 99.5k views

1 Answer

LazerBanana · Answer 1 · 2015-09-15T13:10:29+0000

See below the theee of possibilities:

BBBB
BBBG
BBGB
BBGG
BGBB
BGBG
BGGB
BGGG
GBBB
GBBG
GBGB
GBGG
GGBB
GGBG
GGGB
GGGG

There are 16 differents possibilities.
In 11 of them have at least 2 boys

So probability is 11/16

A couple decided to have 4 children. What is the probability that they will have at least two boys?

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