999999999999999999×99999999999999999999=( )
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约等于(9.9x10^37)
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999999999999999
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2019-08-30
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这个还是很好算的吧,注意位数就行了
999999999999999999×99999999999999999999
=(1000000000000000000-1)x99999999999999999999
=99999999999999999999000000000000000000 - 99999999999999999999
=99999999999999999999000000000000000000 - 100000000000000000000 + 1
=99999999999999999899000000000000000001
999999999999999999×99999999999999999999
=(1000000000000000000-1)x99999999999999999999
=99999999999999999999000000000000000000 - 99999999999999999999
=99999999999999999999000000000000000000 - 100000000000000000000 + 1
=99999999999999999899000000000000000001
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