assignment on sum of 1st nth term of AP. If you know then only answer, it’s urgent​

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assignment on sum of 1st nth term of AP. If you know then only answer, it’s urgent​

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Kennedy 7 days 2021-09-14T17:41:54+00:00 1 Answer 0 views 0

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    2021-09-14T17:43:02+00:00

    Answer:

    The sum of n terms of AP is the sum(addition) of first n terms of the arithmetic sequence. It is equal to n divided by 2 times the sum of twice the first term – ‘a’ and the product of the difference between second and first term-‘d’ also known as common difference, and (n-1), where n is numbers of terms to be added.

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18:9+8+9*3-7:3-1*13 = ? ( )