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December 21, 2014

December 21, 2014

Posted by **katt0109** on Wednesday, November 19, 2008 at 9:53pm.

- biology -
**bobpursley**, Wednesday, November 19, 2008 at 10:19pmHere are the ways it can happen:

all boys, only one way.

bbbb

three boys, one girl, four ways:

bbbg

bbgb

bgbb

gbbb

2girls, two boys six ways.

ggbb

gbgb

gbbg

bggb

bgbg

bbgg

three g, one boy, same as 3b,one g four ways.

four girls

gggg one way.

so probaby of two girls, two boys..

= six/total ways=6/16= 3/8

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