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.