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Questions  >>  CBSE XII  >>  Math  >>  Relations and Functions
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Let $f : R \to R$ be defined as $f (x) = 3x$. Choose the correct answer:

\begin{array}{1 1}(a)\;f\;is\;one-one\;onto. & (b)\;f\;is\;many-one\;onto.\\(c) \;f\;is\;one-one\;but\;not\;onto. & (d)\;f\;is\;neither\;one-one\;nor\; onto.\end{array}

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