计算:0.25×0.25×···×0.25×4×4×···×4（72个）（70个）0.25有72个,4有70个.

Question

计算:0.25×0.25×···×0.25×4×4×···×4 （ 72个 ）（ 70个 ）
0.25有72个,4有70个.

Answer 1

0.25×0.25×···×0.25×4×4×···×4 （ 72个 ）（ 70个 ）
=0.25×0.25（70个0.25） × 4×4×4（70个4） × 0.25×0.25
=（0.25×4）×0.25×0.25
70个
=1×0.25×0.25
=0.0625
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