JEE MATHS UNIT 1 SETS, RELATIONS AND FUNCTIONS
QUIZ NO 1
TOTAL QUESTIONS = 20


1. Which of the following is not a function?


2. A function f: A → B is surjective if


3. What is the range of the function f(x) = x^2 for x ∈ {−2, −1, 0, 1, 2}?


4. Let A = {2, 3, 4} and B = {4, 6}, The Cartesian product A × B has how many elements?


5. If A = {1, 2, 3} and B = {2, 3, 4}, then A ∩ B is


6. Which of the following relations is reflexive?


7. The number of subsets of the set {a, b, c} is


8. If A = {1, 2, 3} and B = {a, b}, then the number of relations from A to B is


9. If A = {1, 2, 3, 4, 5} and B = {4, 5, 6, 7}, then A ∩ B is


10. If A = {a, b, c} and B = {1, 2, 3}, how many bijections are possible from A to B?


11. If f(x) = 2x + 3, then f⁻¹(x) is


12. If f(x) = x² and g(x) = 2x + 1, then (f∘g)(x) is


13. If A = {1, 2, 3}, the number of functions from A to B, where B = {x, y} is?


14. A function f: A → B is said to be one-one if?


15. If A = {1, 2, 3} and B = {2, 3, 4}, then A ∩ B is?


16. The power set of a set containing 3 elements has how many subsets?


17. What is the domain of the function f(x) = 1/(x-2)?


18. The domain of f(x) = √(x - 4) is


19. The inverse of the function f(x) = 2x + 3 is?


20. The domain of the function f(x) = √(x - 3) is



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