Question

What is the H.C.F of 105, 135 and 180?
A. 13 B,15 C. 17 D. 19 E. 21
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Answer 1

b

Step-by-step explanation:

Seeing that all of the numbers are multiple of 5, the answer should be 15 because the other answers don't have 105, 135 or 180 as a multiple