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

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In the arithmetic progression (8,14,20,\ldots), the sum of how many first terms will be (750)?

Answer and explanation

Correct answer: (15)

Putting (n=15) in (S_n=\frac{n}{2}[16+6(n-1)]) gives (750). In such questions, check the options in the formula.

Related tags

Find N Ap Sum Options 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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