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Class 10 Mathematics Arithmetic Progressions (AP)Finding the sum of the first (n) terms of an APEasy

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What is the sum of the first (8) terms of the arithmetic progression (10,15,20,\ldots)?

Answer and explanation

Correct answer: (220)

Here (a=10), (d=5), and (n=8), so the sum is (220). For small (n), you can also check by finding the last term.

Related tags

Ap Sum Common Difference Finding The Sum Of The First (N) Terms Of An Ap Finding The Sum Of The First N Terms Of An Ap Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics

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