If the 11th term of an AP is 48, then find the sum of its first 21 terms.

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If the 11th term of an AP is 48, then find the sum of its first 21 terms.

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Claire 2 months 2021-11-28T12:32:49+00:00 1 Answer 0 views 0

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    2021-11-28T12:34:17+00:00

    sorry,,, I can’t understand the question

    because,,, I think so extra information still u have to tell us about this question

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14:4+1-6*5-7*14:3+5 = ? ( )