Top CBSE Class 12 Maths Questions for Board Exam 2026 – Prepare Smartly
CBSE Class 12 Mathematics Important Questions 2026 – Most Expected Board Exam Questions CHAPTER 1: RELATIONS AND FUNCTIONS Mock Test - Functions and Relations Mock Test: Functions and Relations Q1: If f: {1,3, 4} → {1, 2, 5} and g: {1,2, 5} → {1, 3} given by f = {(1,2), (3, 5), (4,1)} and g = {(1,3), (2, 3), (5,1)}. Write down g∘f. (All India 2014C) Show Hint/Answer g∘f = {(1,3), (3,1), (4,3)} Q2: Let R be the equivalence relation in the set A = {0,1,2,3,4,5} given by R = {(a, b) : 2 divides (a – b)}. Write the equivalence class [0]. (Delhi 2014C) Show Hint/Answer [0] = {0, 2, 4} Q3: If A = {1, 2, 3}, S = {4, 5, 6, 7} and f = {(1, 4), (2, 5), (3, 6)} is a function from A to B. State whether f is one-one or not. (All India 2011) Show Hint/Answer f is one-one (injective), but not onto (not all elements of S are covered) Q4: ...
