Question

What will be the least number of planks if three pieces of timber 42cm,49cm,63cm?​

Answer 1

Answer:

Step-by-step explanation:

To find he least number lets find LCM

42 = 2*2*3*7

49 = 7*7

63 = 3*3*7

LCM = 7^2 * 2^2 * 3^2

       = 1764 planks

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