Q. The sum of the integers from 1 to 100 which are divisible by 3 and 5, is
A) 2317
B) 2632
C) 315
D) 2489
Explanation
(c)
Sum of the integers which are divided by both 3 and 5
$= 15 + 30 + 45 + ... + 90$
$= \frac{6}{2}(15 + 90) = 315$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.