Class XI Chapter 1 – Sets Maths ______________________________________________________________________________ Question 6: Let U be the set of all triangles in a plane. If A is the set of all triangles with at least one angle different from 60 , what is Solution 6: A' A' ? is the set of all equilateral triangles. Question 7: Fill in the blanks to make each of the following a true statement: (i) (ii) (iii) (iv) AA' ... ' A AA' ... U' A... Solution 7: AA' U (i) (ii) ' A U A A ' A A (iii) A (iv) U' A' U ' A A A Printed from Vedantu.com. Register now to book a Free LIVE Online trial session with a Top tutor.

Class XI Chapter 1 – Sets Maths ______________________________________________________________________________ Exercise 1.6 Question 1: If X and Y are two sets such that Solution 1: If is given that: nY n X n X 17, n Y 23, n X Y 38 Y ? n X We know that: n X Y n X nY n X Y 38 17 23 n X Y Y 40 38 2 n X 2 n X Y 17, 23 and Y 38 n X , find n X Y . Question 2: If X and Y are two sets such that elements; how many elements does X Y Solution 2: It is given that: n X Y 18, n X 8, n Y 15 ? n X Y We know that: n X Y n X nY n X Y 18 8 15 n X Y Y 23 18 5 n X Y 5 n X XY has 18 elements, X has 8 elements and Y has 15 have? 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 4 - Principle of M

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Class XI Chapter 8 - Binomial Theor

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Class XI Chapter 9 - Sequences and

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Class XI Chapter 12 - Introduction

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Class XI Chapter 13 - Limits and De

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