Question

find the hcf by prime factorisation 72and136​

Answer 1

Answer:

Step 1 :- Find the prime factorization of 72

72 = 2 × 2 × 2 × 3 × 3

Step 2 :-Find the prime factorization of 136

136 = 2 × 2 × 2 × 17

Step 3 :-To find the GCF, multiply all the prime factors common to both numbers:

Step 4 :-Therefore, GCF = 2 × 2 × 2

GCF = 8

Answer 2

Answer:

72 = 2 x 2 x 2 x 3 x 3

136 = 2 x 2 x 2 x 17

So, HCF will be = 2 x 2 x 2 = 8

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