(1+3+5+7+...+99+101)-(2+4+6+...+98+100)简便计算
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![(1+3+5+7+...+99+101)-(2+4+6+...+98+100)简便计算](/uploads/image/z/34066-10-6.jpg?t=%EF%BC%881%2B3%2B5%2B7%2B...%2B99%2B101%29-%282%2B4%2B6%2B...%2B98%2B100%EF%BC%89%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
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(1+3+5+7+...+99+101)-(2+4+6+...+98+100)简便计算
(1+3+5+7+...+99+101)-(2+4+6+...+98+100)简便计算
(1+3+5+7+...+99+101)-(2+4+6+...+98+100)简便计算
(1+3+5+7+...+99+101)-(2+4+6+...+98+100)= (1-2)+(3-4)+...+(99-100)+101=50*(-1)+101=51