依题意可知
=1+(3+2)(3-2)+(4+5)(5-4)+(6+7)(7-6)+.+(101+100)(101-100)
=1+2+3+4+5+6+7+...+100+101
=(1+101)+(2+100)+(3+99)+...+(50+52)+51
=102*50+51
=5100+51
=5151
依题意可知
=1+(3+2)(3-2)+(4+5)(5-4)+(6+7)(7-6)+.+(101+100)(101-100)
=1+2+3+4+5+6+7+...+100+101
=(1+101)+(2+100)+(3+99)+...+(50+52)+51
=102*50+51
=5100+51
=5151