Mathematics · 2013
JEE Main · 9 April 2013, Shift 1 · Q82
Let A ={1,2,3,4} and R: A → A be the relation defined by: R ={(1,1),(2,3),(3,4),(4,2)}. The correct statement is:
Let $\displaystyle \mathrm{A}=\{1,2,3,4\}$ and $\displaystyle \mathrm{R}: \mathrm{A} \rightarrow \mathrm{A}$ be the relation defined by :
$$\begin{aligned}
& \mathrm{R}=\{(1,1),(2,3),(3,4),(4,2)\} \text {. The correct } \\
& \text { statement is : }
\end{aligned}
$$
Official answer
(3)
R is an onto function.
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JEE Main 2013 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.