Free Practice Question
PS · Problem Solving
505-555
Number Properties
How many factors does the positive integer 180 have?
Answer Choices
Correct answer marked belowA
2
B
9
C
12
18
Correct
E
24
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Explanation
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Official Explanation
Official
To determine the number of factors of the integer 180, we first perform its prime factorization. The prime factorization of 180 is . Using the formula for finding the number of factors, which is…
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Comments
2
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A
ArjunSep 17, 2024
can you explain more?
M
MuhammadJul 4, 2024
thank you for sharing
What this question tests
What it tests
Your command of divisibility, primes, factors, parity, and how the GMAT tests properties of integers.
Common trap
Forgetting that 1 is not prime, that 0 is divisible by every integer, or that negative numbers flip your assumptions.
Details
Difficulty
505-555
Type
PS
Category