Determine the range of the prime factors of B, where B = 420.

Correct answer marked below

A

2

B

3

5

Correct

D

7

E

10

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

B = 420 = 2 * 2 * 3 * 5 * 7. The prime factors are 2, 3, 5, and 7. The range is…

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

Comments

3

Sign in to join the discussion

U

UmangFeb 21, 2024

how much time should this take to solve?

Y

YugeshDec 16, 2024

pls explain more?

N

NeilSep 21

just posted another explanation

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.