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What is the identity element for a binary operation defined on a set of natural nos such that ab equals HCF of a and b.?
Wiki User
∙ 11y ago
I think it would be the number itself?
If a*b is a binary operation giving HCF,
Then, for example, 15*15 = 15.
Factors of 15 are 1,3,5,15.
So I guess with 2 15's, the HCF = 15.
I hope it's right :)
Wiki User
∙ 11y ago
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