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Number of binary operations on the set \(\{a, b\}\) are

$\begin{array}{1 1} 10 \\ 16 \\ 20 \\ 8 \end{array}$

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The number binary operation defined by * from $\{(a,a)(a,b),(b,a),(b,b)\} \to \{a,b\}$ is $ 2^4=16$
The correct answer is B


answered Mar 1, 2013 by meena.p
edited Mar 20, 2013 by balaji.thirumalai

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