Math, asked by Tenzinlhagyal, 8 months ago

n/2(a + l) how to use this formula

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Answered by Anonymous

In an Arithmetic Sequence the difference between one term and the next is a constant. ... { 1, 1+3, 1+2×3, 1+3×3, ... } ... (We use "n−1" because d is not used in the 1st term). ... use this formula:.

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