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Question Number 142947 by mathdanisur last updated on 07/Jun/21

$$Whatistheprobabilitythat3points$$$$willfalltwicewhenadiceisthrown$$$$4times?$$

Commented by mr W last updated on 07/Jun/21

$$p=\frac{C_2^4\times 5\times 5}{6^4}=\frac{25}{216}$$

Commented by mathdanisur last updated on 07/Jun/21

$$thanksSir$$

Commented by mathdanisur last updated on 07/Jun/21

$$Sir,C_2^{4}or{C}_4^2?$$

Commented by mr W last updated on 08/Jun/21

$$thesame.$$

Commented by Olaf_Thorendsen last updated on 08/Jun/21

$$\mathrm{In}\mathrm{France}\mathrm{we}\mathrm{write}{\mathrm{C}}_k^n.$$$$\mathrm{In}\mathrm{UK}\mathrm{we}\mathrm{write}{\mathrm{C}}_n^k.$$$$\mathrm{But}\mathrm{it}\mathrm{is}\mathrm{the}\mathrm{same}.$$

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