In how many ways can 21 identical Red balls and 19 identi...

Free Practice Question

PS · Problem Solving

705-805

Combinations

In how many ways can 21 identical Red balls and 19 identical Blue balls be arranged in a row so that no 2 Blue balls are together?

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A

\frac{22!}{3!19!}

B

\frac{2!}{19!22!}

C

\frac{21!}{2!19!}

D

\frac{19!}{3!22!}

E

\frac{21!}{3!19!}

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