What is the sum of all the even integers from 1 to 61?

Correct answer marked below

A

980

930

Correct

C

860

D

840

E

740

You can see the correct answer above. Sign in for free to unlock the complete worked solution.

Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.

Explanation

Preview

Official Explanation

Official

There are 30 even numbers from 1 to 61. If we group them in pairs like (2+60), (4+58), ..., (28+32), we find that each…

Sign in for free to see the complete step-by-step solution to this question.

Comments

2

Sign in to join the discussion

K

KartikayOct 26, 2024

got this wrong on my practice

J

jkindigoMar 21, 2025

Great!

What this question tests

Your command of divisibility, primes, factors, parity, and how the GMAT tests properties of integers.

Forgetting that 1 is not prime, that 0 is divisible by every integer, or that negative numbers flip your assumptions.

Create a free account to reveal the correct answer and see step-by-step explanations for every question.