1+1/2+1/4+1/8+1/16
=□×1/2×1/4×1/8×1/16
この□に入る数はいくつですか?
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1+1/2+1/4+1/8+1/16
=□×1/2×1/4×1/8×1/16
この□に入る数はいくつですか?
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