Question

Find the HCF of 20 and 28​

Answer 1

Answer:

4

Explanation:

We will calculate the prime factors of 20 and 28, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 20 and 28.

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Answer 2

Answer:

Explanation:

4 x 5=20

4 x 7=28

∴hcf(20,28)=4