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Clearnote
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Junior High
Mathematics
・数学¦確率 なんで5通りじゃないのですか...
Mathematics
Junior High
almost 3 yearsago
タダノオタクෆ.*・゚
・数学¦確率
なんで5通りじゃないのですか…?˘˘̥
41 1個のさいころを2回投げるとき、目の和が次のようになる場合は何通りあるか。 (1) 6 または9 (2)3の倍数 (3) 5 以下 5通り
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