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Question Number 11425 by tawa last updated on 25/Mar/17

Answered by mrW1 last updated on 25/Mar/17

$$\left(1\right)12C5=792$$$$\left(2\right)9C5+3\times \left(9C4\right)+3\times \left(9C3\right)=126+3\times 126+3\times 84=756$$$$\left(3\right)10C5+10C3=252+120=372$$

Commented by tawa last updated on 25/Mar/17

$$\mathrm{God}\mathrm{bless}\mathrm{you}\mathrm{sir}$$

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