1) Which of the following collection is a set? a) collection of most beautiful flowers b) collection of letters in English alphabet c) collection of handsome boys d) collection of intelligent teachers 2) If A={1,2,3,4,5}, which of the following is not true? a) 3∈A b) 4∉A c) 1∈A d) 5∈A 3) The roster form of the set {x:x is an even natural number less than 10} is: a) {1,2,3,4,5,6,7,8,9} b) {1,3,5,7,9} c) {2,4,6,8,} d) {1,2,3,4,5,8,9} 4) The set {x : x2 = -1 , x∈ R} is: a) Null Set b) Singleton Set c) Pair Set d) None of these 5) The set {x:x is a natural number and x2<40} in roster form is: a) {2,4,6,..39} b) {1,2,3,....40} c) {1,9, 25,36} d) {1,4,9,16,25,36} 6) The set of all even prime numbers greater than 2 is: a) Null Set b) infinite set c) singleton Set d) Pair Set 7) If A={1,3,5} , B={1,3,5,7}, then: AUB is a) {1,3,5} b) {1,3,5.7} c) ∅ d) {3,5} 8) The number of subsets of the set {a, b} is: a) 2 b) 3 c) 4 d) 8 9) Which one is the universal set if we consider the set of even numbers less than 10? a) {2, 4, 6} b) {1, 2, 3, ..., 10} c) {0, 2, 4, 6, 8} d) {2, 4, 6, 8, 10} 10) If A={ 1,2,3,4,5,6,7,8,9} B={ 2,4,6,8,9} what is B-A? a) {1,3,5,7,9} b) { 2,4,6,8,9} c) { 1,2,3,4,5,6,7,8,9} d) {1,3,5,7} 11) A={1,2,3,4} B={4,5,6}, then A ∩B is a) {4} b) { } c) {4,5,6} d) {1,2,3,4} 12) In a Venn diagram, if two sets do not intersect, then they are: a) Disjoint Sets b) District Sets c) Dessel Sets d) Cantor Sets 13) A={a,e,i,o,u} B={ x: x is a letter in English alphabet }. Which of the following is true? a) A⊏B b) B⊑A c) A and B are disjoint sets d) none of these 14) The interval of set {x: x is real number and 2 < x ≤6} is a) (2 , 6) b) (2,6] c) [2,6) d) [2,6] 15) If A= {x: x is a real number } then the interval of A= a) (∾, 0) b) (-∾,∾ ) c) [0, ∾) d) [-∾, ∾]

Online DSEJ Mathematics Quiz for Class 11th

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