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In a certain sequence of 8 numbers, each number after the first is 1 more than the previous number. If the first number is –5, how many of the numbers in the sequence are positive?
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第一个数字是－5，那么这一串数是－5，－4，－3，－2，－1...还剩3个数，但0不是正数，所以还是2个
echouno
0不是正数！
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2017-09-29 16:17:53
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