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Question Number 208812 by Adeyemi889 last updated on 23/Jun/24

Answered by mr W last updated on 23/Jun/24

$$\left(a\right)$$$$p=\frac{C_2^4+C_2^{12}+C_2^8}{C_2^{24}}=\frac{6+66+28}{276}=0.362$$$$\left(b\right)$$$$p=\frac{4\times 12+4\times 8+12\times 8}{276}=0.638$$$$\left(c\right)$$$$p=\frac{4\times 12}{276}=0.174$$

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