Sets Class 11 Exercise 1.3 Solutions
Sets Class 11 Exercise 1.3 Solutions Exercise 1.3 1. Make correct statements by filling in the symbols ⊂ or ⊄ in the blank spaces : (i) { 2, 3, 4 } . . . { 1, 2, 3, 4,5 } (ii) { a, b, c } . . . { b, c, d } Solution. (i) ⊂ (ii) ⊄ (iii) {x : x is a student of Class XI of your school}. . .{x : x student of your school} Solution. ⊂ (iv) {x : x is a circle in the plane} . . .{x : x is a circle in the same plane with radius 1 unit} Solution. ⊄ (v) {x : x is a triangle in a plane} . . . {x : x is a rectangle in the plane} Solution. ⊄ (vi) {x : x is an equilateral triangle in a plane} . . . {x : x is a triangle in the same plane} Solution. ⊂ (vii) {x : x is an even natural number} . . . {x : x is an integer} Solution. ⊂ 2. Examine whether the following statements are true or false: (i) { a, b } ⊄ { b, c, a } True (ii) { a, e } ⊂ { x : x is a vowel in the English alphabet} True (iii) { 1, 2, 3 } ⊂ { 1, 3, 5 } F...