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Let f(x)a n dg(x) be bijective functions...

Let `f(x)a n dg(x)` be bijective functions where `f:{1, b , c , d}vec{1,2,3,4}a n dg:{3,4,5,6}vec{2, x , y , z},` respectively. Then, find the number of elements in the range of `g"("f(x)"}"dot`

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