Q19 of 123 Page 3

Let * be a binary operation on N given by a * b = HCF (a, b), a, b ∈ N. Write the value of 22 * 4.

The given binary operation is a*b = HCF(a,b)

We have to find the value of 22*4


Applying the relation we have


22*4 = HCF(22,4) = 2


Hence the required solution is 2.


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