✨ Best Answer ✨
目の積が5の倍数
①5が1つ
5/6✕5/6✕1/6=25/216
②5が2つ
5/6✕1/6✕1/6=5/216
③5が3つ
1/6✕1/6✕1/6=1/216
①②③は互いに排反なので
(25+5+1)/216=31/216…(答)
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