Question

Find Lcm of 5 and 7.5 need procedure he to find

Answer 1

L.C.M. will be - 30

Why- Because if you want to find LCM of numbers, just select the largest number out of all the numbers given and then select the smallest multiple of that number which is also a multiple of other numbers. This way you can find LCM easily.

Now coming to the question.

LCM of 7.5,6,5

Out of these, 7.5 is the largest number. Now start seeking multiples of 7.5

7.5x1=7.5 (Multiple neither of 5 nor of 6)

7.5x2=15 (Multiple of 5 but not of 6)

7.5x3=22.5 (Multiple neither of 5 nor of 6)

7.5x4=30 (Multiple of both 5 an 6)

So, LCM will be 30.

Note: You can also find the LCM by prime factorization method but that will be a bit more difficult that's why this method is much better.

Answer 2

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