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Sum of n term |
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Answer» 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. Sum of n terms of AP = n/2[2a + (n – 1)d] N/2{2a+(n-1)d}=SñSñ= n/2{a+añ} |
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