Proving Same Cardinality of F(\mathbb{Q},\mathbb{R}) and \mathbb{R}

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Homework Statement





F(\mathbb{Q},\mathbb{R}) is the set of maps from \mathbb{Q} to \mathbb{R}. Then show that F(\mathbb{Q},\mathbb{R}) and \mathbb{R} have same potency (cardinal number?)..



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The Attempt at a Solution



I am no tsure but I think I need to find bijection map between these sets, but how?
 
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What is the cardinal number of F(\mathbb{Q},\mathbb{R})??
 
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