Question

What is the HCF of 21 and 33

Answer 1

Answer:

• Find the prime factorisation is 21.

• 21 = 3 × 7

• Find the prime of 33

• 33 = 3 × 11

• To the find the GCF , Multiply all the prime factors common to both numbers.

Therefore ,

[HCF = 3]

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