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If A={1,2,3,4},B={1,2,3,4,5....25} and f:A→B is a function such that f(x)=x2, then the number of elements in the range of f(x) is

Answer» If A={1,2,3,4},B={1,2,3,4,5....25} and f:AB is a function such that f(x)=x2, then the number of elements in the range of f(x) is


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