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Let f(x) and g(x) be bijective functions...

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

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