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Relations and Functions — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsRelations and Functions1 Mark
MCQ
Let $A=\{1,2,3\}$ and $B=\{1,2,4\}$, then $f=\{(1,1),(1,2),(2,1),(3,4)\}$ is a
  • A
    one-one function from $A$ to $B$
  • B
    bijection from $A$ to $B$
  • C
    surjection from $A$ to $B$
  • ✓
    None of these
✓

Answer

Correct option: D.
None of these
(d) : Here, $f$ is not a function from $A$ to $B$ as $f(1)$ is not unique.

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