Question 18

The LCM of 14, 35 and 56 is:

Solution

Prime factors of the given numbers are

14 - 2 x 7

35 - 5 x 7

56 - 7 x $$2^{3}$$

LCM of three numbers can be obtained by multiplying each factor with the greatest number of times it occurs.

LCM = 2$$^{3}$$ x 5 x 7 = 280

Hence, option A is the correct anwer.

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