(1994+1992+······+4+2)—(1+3+5+······+1991+1993)=( )
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![(1994+1992+······+4+2)—(1+3+5+······+1991+1993)=( )](/uploads/image/z/333005-5-5.jpg?t=%EF%BC%881994%2B1992%2B%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%2B4%2B2%EF%BC%89%E2%80%94%EF%BC%881%2B3%2B5%2B%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%C2%B7%2B1991%2B1993%EF%BC%89%3D%EF%BC%88+%EF%BC%89)
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(1994+1992+······+4+2)—(1+3+5+······+1991+1993)=( )
(1994+1992+······+4+2)—(1+3+5+······+1991+1993)=( )
(1994+1992+······+4+2)—(1+3+5+······+1991+1993)=( )
(1994+1992+······+4+2)—(1+3+5+······+1991+1993)
=(1994-1993)+(1992-1991)+……+(2-1) 共1994÷2=997组
=1X997
=997
(1994+1992+······+4+2)—(1+3+5+······+1991+1993)=( 997)
原式=(1994-1993)+……+(2-1) 共有1994/2=997项
=997
遇到这种题目可以 给数字配配对=V=
(1994+1992+······+4+2)—(1+3+5+······+1991+1993)=( )
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