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计算99......9(2010个9)*99.。。9(2010个9)+1999.。。。9(2010个9)所得的结果末尾有个零...
计算99......9(2010个9)*99.。。9(2010个9)+1 999.。。。9(2010个9)所得的结果末尾有 个零
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=99......9(2010个9)* [ 99....9(2010个9)+1] + 100......0(2010个0)
=99......9(2010个9)* 100......0(2010个0) + 100......0(2010个0)
=100......0(2010个0) * [99......9(2010个9)+1]
=100......0(2010个0) * 100......0(2010个0)
=100......0(4020个0)
=99......9(2010个9)* 100......0(2010个0) + 100......0(2010个0)
=100......0(2010个0) * [99......9(2010个9)+1]
=100......0(2010个0) * 100......0(2010个0)
=100......0(4020个0)
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