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Write the correct answer :
The number of common prime factors of 75, 60, 105 is
(A) 2 (B) 3 (C) 4 (D) 5
Answers (1)
(A) 2
Prime factors of,
75 = 3 x 5 x 5
60 = 2 x 2 x 3 x 5
105 = 3 x 5 x 7
So, common prime factors in the given three numbers are 3 and 5. So there are two common prime factors.
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