Let * be a binary operation on N given by a * b = LCM (a, b) for … - Vidyadip

Question

Let * be a binary operation on N given by a * b = LCM (a, b) for all $\text{a, b}\in\text{N.}$ Find 5 * 7.

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Answer

As, a * b = LCM (a, b)
So, 5 * 7 = LCM (5, 7) = 35

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