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If $*$ is a binary operation defined as $a*b=3a-b$, then $(2*3)*4=$ ?

$\begin{array}{1 1} 2 \\ 3 \\ 4 \\ 5 \end{array}$

1 Answer

$2*3=6-3=3$
$(2*3)*4=3*4=9-4=5$
answered May 12, 2013 by rvidyagovindarajan_1
 

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