nth term of an ap -Ap, an = _
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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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an = a + (n-1)d
an = nth term of A.p
a = 1st term of A.P
d = difference between two consecutive term
n = number of terms
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