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Add up every three-digit number that is divisible by 7. What is the total?

Class 10Sum of n Terms of an APAlgebra — Sequences

A70336
B70000
C71400
D69300

Step-by-Step Solution

First = 105, last = 994,

d = 7. n = \frac{994 - 105}{7} + 1 = \frac{889}{7} + 1 = 127 + 1 = 128. S = \frac{128}{2}

(105 + 994) = 64 (1099) = 70336

.

Answer: A) 70336

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