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Let* be a binary operation on N given by...

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

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Here, `a**b = HCF(a,b) a,b in N`
`:. 22**4 = HCF(22,4)`
`=>22 = 2**11 and 4 = 2**2`
Here, common factor is `2`. So,HCF is `2`.
`:. 22**4 = 2`
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