世界上最难的数学题99999999999999999999999999999999999999999999999*9999999999999999999999999999999999999999999999是多少?
2019-03-30
世界上最难的数学题
99999999999999999999999999999999999999999999999*9999999999999999999999999999999999999999999999是多少?
优质解答
99999999999999999999999999999999999999999999999*9999999999999999999999999999999999999999999999
=(10^48-1)(10^47-1)
=10^95-10^48-10^47+1
=10^95-10×10^47-10^47+1
=10^95-11×10^47+1
这个结果共有94位数,
9.890.1
连续46个9 后是89 再连续45个0,个位是1
99999999999999999999999999999999999999999999999*9999999999999999999999999999999999999999999999
=(10^48-1)(10^47-1)
=10^95-10^48-10^47+1
=10^95-10×10^47-10^47+1
=10^95-11×10^47+1
这个结果共有94位数,
9.890.1
连续46个9 后是89 再连续45个0,个位是1