Answer
(a) $ 8.634628387\times10^{45}$
(b) $ 0.6531$
(c) $ 0.3469$
Work Step by Step
(a) $N_1=\ _{365}P_{18}\approx8.634628387\times10^{45}$
(b) $p_1=\frac{ _{365}P_{18}}{365^{18}}\approx0.6531$
(c) $p_2-1-p_1\approx0.3469$
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