Free Practice Question
PS · Problem Solving
sub-505
Divisibility/Multiples/Factors
What is the sum of the different positive prime factors of 660?
Answer Choices
Correct answer marked belowA
10
B
11
C
15
D
16
21
Correct
See the full step-by-step explanation
You can see the correct answer above. Sign in for free to unlock the complete worked solution.
Track your performance and improve
Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.
Explanation
Preview
Official Explanation
Official
To find the sum of the different positive prime factors of 660, we start by factoring 660.
We can express 660 as 66 * 10, which further breaks down to 6 * 11 * 10.…
We can express 660 as 66 * 10, which further breaks down to 6 * 11 * 10.…
Read the full explanation
Sign in for free to see the complete step-by-step solution to this question.
Comments
2
Sign in to join the discussion
G
GaganJun 26, 2024
Thank you very much!
S
SaranchanaJan 17, 2025
Thanks
What this question tests
What it tests
Your understanding of divisibility rules, least common multiples, and greatest common factors.
Common trap
Forgetting that 1 is not prime and that every integer divides 0.
Details
Difficulty
sub-505
Type
PS
Category