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18 January, 10:51

The sums of arithmetic sequence of 1+2+3+4 ... + 49

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  1. 18 January, 11:09
    0
    I'm sorry but I haven't learned this. Using what I do know, shouldn't it be infinity?
  2. 18 January, 11:21
    0
    1225 is the sum of that arithmetic progression.

    Step-by-step explanation:

    Here 'a' is taken as the first term

    And 'l' is taken as the last term

    Sum of n = n / 2 (a + l)

    = 49 / 2 (1 + 49)

    = 49/2 * 50

    = 49 x 25

    = 1225
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