Class XI Chapter 1 – Sets Maths ______________________________________________________________________________ Exercise 1.5 Question 1: Let U (i) (ii) A' B ' (iii) ' 1,2,3;4,5,6,7,8,9 , A 1,2,3,4 , B 2,4,6,8 A C A B (iv) ' A' ' (v) B C (vi) ' Solution 1: U A B C (i) (ii) (iii) 1, 2,3, 4,5,6,7,8,9 1,2,3,4 2, 4,6,8 3, 4,5,6 A' 5,6,7,8,9 B ' 1,3,5,7,9 AC 1, 2,3, 4,5,6 A C' 7,8,9 (iv) A B 1, 2,3, 4,6,8 AB ' 5,7,9 A' ' A 1,2,3,4 (v) (vi) BC 2,8 B C ' 1,3,4,5,6,7,9 and C 3, 4,5,6 . Find Question 2: If U a b c d e f g h (i) A a, b, c (ii) B d, e, f , g , , , , , , , , find the complements of the following sets: Printed from Vedantu.com. Register now to book a Free LIVE Online trial session with a Top tutor.

Class XI Chapter 1 – Sets Maths ______________________________________________________________________________ (iii) (iv) C D a, c, e, g Solution 2: U (i) A f , g, h, a a, b, c, d, e, f , g, h , a, b, c A' d, e, f , g, h (ii) B d, e, f , g B ' a, b, c, h (iii) C a, c, e, g C ' b, d, f , h (iv) D f , g, h, a D ' b, c, d, e Question 3: Taking the set of natural numbers as the universal set, write down the complements of the following sets: (i) (ii) (iii) (iv) (v) (vi) x: x is a perfect square (vii) x: x is a perfect cube (viii) x: x +5=8 (ix) (x) x: x 7 (xi) x : x N and 2x 1 10 x: xis an even natural number x: xis an odd natural number x: xis a positive multipleof 3 x: xis a prime number x: xis a natural number divisible by 3 and 5 x: 2x5 9 Solution 3: U = N set of natural numbers (i) x : xis an even natural number ' x : xis an odd natural number (ii) x : xis an odd natural number ' x : xis an even natural number Printed from Vedantu.com. Register now to book a Free LIVE Online trial session with a Top tutor.

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Class XI Chapter 12 - Introduction

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