Free Practice Question
PS · Problem Solving
705-805
Divisibility/Multiples/Factors
If n is a positive integer and is a multiple of but not , then how many value can n take ?
Answer Choices
Correct answer marked belowA
21
14
Correct
C
13
D
12
E
7
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Explanation
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Official Explanation
Official
When is a multiple of , minimum value of n is 42.
When is a multiple of , minimum value of n is 56.…
When is a multiple of , minimum value of n is 56.…
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Sign in to commentWhat 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
705-805
Type
PS
Category