Answers

1の位は1,3,5の通り
10の位は何でも良いので残り4枚のどれかで4通り
100の位も何でも良いので残り3枚のどれかで3通り
3×4×3=36個

ととろ

✕ 1の位は1,3,5の通り
○ 1の位は1,3,5の3通り

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