Question

find the HCF of 63, 49, 35​

Answer 1

Answer:

Step-by-step explanation:

Option:

A. (72, 40,24)B. (72, 48, 24)C. (64, 40, 28)D. (81, 63, 45)

Answer: D . (81, 63, 45)

Justification: Each set consists of numbers which are obtained by multiplying a certain number by 9, 7 and 5 respectively.

Thus, in the given set, 63 = 7 * 9, 49 = 7 * 7, 35 = 7 * 5.

Similarly, 81 = 9 * 9, 63 = 9 * 7, 45 = 9 * 5.

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Answer 2

H.C.F of 63,49,35

By prime factorisation method.

63=3*3*7

49=7*7

35=5*7

so H.C.F of given pair is 7

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