Question

63. H.C.F. ज्ञात कीजिए:
63, 42 और 91
(A) 21
(B) 7
(C) 3
(D) 9.​

Answer 1

Answer:

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Answer 2

Given:

H.C.F. ज्ञात कीजिए:

63, 42 और 91

To find:

H.C.F. ज्ञात कीजिए

Solution:

Firstly, we have the given numbers as:

63, 42 and 91

Secondly, we will find the H.C.F. i.e., the Highest Common Factor of the three given numbers by using the prime factorisation method.

Factors of 63, 42 and 91:

63 = 3 × 3 × 7

42 = 2 × 3 × 7

91 = 7 × 13

We can see that only 7 is the common factor among the three numbers

∴ H.C.F. (63, 42 and 91) = 7 ← option (B)

Thus, the H.C.F. of 63, 42 और 91 is → 7.

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