Question

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Answer 1

Answer:

Hey Hi

The HCF(42,49,63) = 7m

Thus the greatest length of the plank to be cut is 7m

Hope this helps

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Rishabh Bansal

Answer 2

Step-by-step explanation:

given,

42m,49m,63m

greatest length=h.c.f of the numbers

hence greatest length=7m

hope it is helpful.

please mark as brainliest answer.