Question

The sum of numbers lying between $10$ and $200$ which are divisible by $7$ will be

• A. 2800
• B. 2835
• C. 2870
• D. 2849

Answer 1

Answer: (B)

We have to find the sum of numbers lying between $10$ and $200$ which are divisible by $7$
Here first number is $14$ and last number $=196$
common difference $d=7$
$\therefore 196=14+(n-1)7$
$\Rightarrow n=27$
$\therefore$ sum of numbers $=\frac{27}{2}(14+196)=2835$