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Gre4nikov [31]
3 years ago
13

What is the sum of the arithmetic series below?

Mathematics
1 answer:
never [62]3 years ago
5 0
Our question transforms to finding the following sum : 3 + 7 + 11 + 15.... upto 15 terms 

<span>Use formula for sum of an AP series </span>

<span>S = (n * (2a + (n - 1)d)) / 2 </span>

<span>n -> no of terms in AP series , so n = 15 </span>
<span>a -> first term in series, so a = 3 </span>
<span>d -> common difference, so d = 4 </span>

<span>Put all values for a, n, d and you will get the sum.</span>
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