Question 12 If LCM (x, 18) = 36 and HCF (x, 18) = 2, then x is (a) 2 (b) 3 (c) 4 (d) 5
We know that
LCM × HCF = Product of 2 numbers
Putting values
36 × 2 = x × 18
36 × 2 × 1/18 = x
2 × 2 = x
4 = x
x = 4
So, the correct answer is (c)

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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