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数学
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100-98+96-94+92-90+…+8-6+4-2=______.
人气:106 ℃ 时间:2020-04-06 15:05:30
解答
100-98+96-94+92-90+…+8-6+4-2.
=(100-98)+(96-94)+(92-90)+…+(8-6)+(4-2),
=2×25,
=50;
故答案为:50.
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