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  • 教室里座位的行數(shù)為n,每行的座位數(shù)比行數(shù)多1,教室里座位總數(shù)是()個.

    教室里座位的行數(shù)為n,每行的座位數(shù)比行數(shù)多1,教室里座位總數(shù)是()個.
    英語人氣:417 ℃時間:2020-03-16 17:01:58
    優(yōu)質(zhì)解答
    n(n+1)
    Classroom seats in Row n, number of seats per row lines and more than 1, the classroom is the total number of seats
    Classroom seats in Row n, number of seats per row lines and more than 1, the total number of classroom seats ().
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