If a family has 4 children, in how many ways could the parents have 2 boys and 2 girls as children?

Answer 1

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BGGB
BGBG
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4!/2!2!=4*3*2*1/2*2=6

Answer 2

Write 5*10^ -4 in decimal notation.

Select the correct answer.
0.00005
-50000
-5000
0.0005

Answer 3

0.0005