Question

find HCF of 20 and 70 by prime factorization method
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Answer 1

Answer:

The prime factorization of 20 is: 2 x 2 x 5. The prime factorization of 70 is: 2 x 5 x 7. The prime factors and multiplicities 20 and 70 have in common are: 2 x 5. 2 x 5 is the gcf of 20 and 70.

Step-by-step explanation:

Answer 2

Answer-

The HCF of 20 and 70 are

20- 2×5×2

70- 2×5×7

The HCF is 2×5= 10

I hope it help you.......