Free Practice Question
PS · Problem Solving
sub-505
Divisibility/Multiples/Factors
Given that A?B represents the greatest common factor of A and B, A~B denotes the least common multiple of A and B, and A&B is defined as (A?B)~(A~B), what is the result of 18&24?
Answer Choices
Correct answer marked below72
Correct
B
84
C
90
D
96
E
108
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Explanation
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Official Explanation
Official
Calculating the greatest common factor, we find (18?24) = 6. For the least common…
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P
PatrickMar 10, 2025
can you explain more?
L
LaraJun 20, 2024
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