试试看,2011^2011=(2000+11)*(2000+11)*...(2000+11)=~11^2011,(因只有这一项个位,十位,百位不为零.)=(10+1)(10+1)...(10+1)=~(2011*2010/2)*10*10*1^2009+2011*10*1^2010+1^2011=202123611.
2011*2011/2 是组合数,2011个东西,取俩个的取法数...,如3个东西A,B,C取2个有3*2/2个法,AB,AC,BC...,...
试试看,2011^2011=(2000+11)*(2000+11)*...(2000+11)=~11^2011,(因只有这一项个位,十位,百位不为零.)=(10+1)(10+1)...(10+1)=~(2011*2010/2)*10*10*1^2009+2011*10*1^2010+1^2011=202123611.
2011*2011/2 是组合数,2011个东西,取俩个的取法数...,如3个东西A,B,C取2个有3*2/2个法,AB,AC,BC...,...
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