Each of the ordered pairs $$\((3,4)\)$$ and $$\((12,3)\)$$ has a least common multiple of 12 . All together, how many ordered pairs of positive integers have a least common multiple of 12 ?
A.
16
B.
15
C.
14
D.
13
Exam No:2022 First Round Grade 7 Year:2022 Question No:24
Answer:
B
Knowledge points:
G7 - Number Theory - Prime Factorization
Solution:
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