From the diagram, the element a in set A is mapped to two different elements (1 and 4) in set B. A function must assign exactly one image to each element of the domain. Therefore f is not a function from A to B.
CUET UG 2022 — Mathematics Algebra
2022mcqeasy
Which of the following is true on the basis of above diagram?
Official previous-year question
Held on 30 Aug 2022 · Verified 13 Jul 2026.
Options
- A
'f' is a function from A→B
- B
'f' is one-one function from A→B
- C
'f' is onto function from A→B
- D
'f' is not a function from A→B
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