In a box, there are 6 red balls and 4 blue balls. If 4 bo...

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PS · Problem Solving

605-655

Combinations

In a box, there are 6 red balls and 4 blue balls. If 4 boys and 6 girls each randomly pick a ball and keep it, what is the probability that all of the boys choose the same color ball?

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A

\frac{8}{105}

B

\frac{1}{5}

C

\frac{2}{7}

D

\frac{4}{55}

E

\frac{4}{105}

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