Question

What is the lcm
of 1485 and 4356 ?

Answer 1

[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]

First, take the LCM of 1485we will have 3x3x3x5x11then again take the LCM of 4356we will have 2x2x3x3x11x11
Take the highest common factors from the abovei.e. 11 and 3x3So, the answer is  11x3x3=99 (HCF)[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]

Answer 2

Prime factors of 1485=3.3.3 . 5 . 11

Prime factors of 4356=2.2 . 3.3 . 11.11

Now the common factors : 
3.3. 11.11. 5. 2.2


Hence LCM = 65340

Hope it helps.

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