Question

Q. Find the HCF of following integers by applying prime factorisation method.

1. 12, 15 and 21
Please help it's urgent
Ch - Real Numbers
Class 10th
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Answer 1

Step-by-step explanation:

for 12

2×6

2×2×3

for 15

3×5

for 21

3×7

common factor

2×2×3

3×5

3×7

thus common factor is 3

therefore HCF IS 3

Answer 2

Step-by-step explanation:

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