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Questions  >>  CBSE XII  >>  Math  >>  Relations and Functions
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Q)

Is $\ast$ defined on the set $\{1,2,3,4,5\}$ by $a\ast b=L.C.M$.of $a$ and $b$ a binary operation?

$\begin{array}{1 1} \text{at is a binary operation} \\ \text{at is not a binary operation } \end{array}$

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