Question

calculate the sum of multiples of 7 between 100 and 300​

Answer 1

105, 112, ... 294

First term = a = 105

Common difference = d = 7

Let 294 be the nth term of the AP.

Then, 294 = a + (n - 1)d

294 = 105 + (n - 1)7

7(n - 1) = 189

n = 28

Answer 2

Step-by-step explanation:

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