0.1x0.2x0.3……x0.9怎样简便运算
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发布时间:2024-10-24 13:19
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热心网友
时间:2024-10-26 21:03
=(1×2×3×4×5×6×7×8×9)/ 10^9
= 9!/10^9
= 362880/10^9
= 0.00036288
热心网友
时间:2024-10-26 21:04
=1*2*3*4*5*6*7*8*9/1000000000
=720*7*72/1000000000
=72*7*72/100000000
=9*7*72/12500000
=9*7*9/(125*12500)
=567/(625*25*100)
=567/(625*0.25*10000)
=567/(625/4*10000)
=567/(156.25*10000)
=576/1562500