Answer: Injective but not surjective.
- A Bijective
- B Injective but not surjective
- C Surjective but not injective
- D Neither
Correct answer: B. Injective but not surjective
Explanation: f is one-one (distinct inputs give distinct outputs). But 1 in N has no pre-image, so not surjective.
Concept context
Ordered pairs, Cartesian products, types of relations and functions, domain and range. Foundation for calculus and Class 12 algebra.