# What is the sum of all natural numbers between 100 and 400 which

| What is the sum of all natural numbers between 100 and 400 which are divisible by 13?

A. 5681

B. 5334

C. 5434

D. 5761

Please scroll down to ** see the correct answer ** and ** solution guide.**

### Right Answer is: A

#### SOLUTION

First number divisible by 13 between 100 and 400 is 104 and last number is 390

390=104+(n-1)× 13

286=(n-1)× 13

n=23

sum=