# Plus One Math's Solution Ex 1.5 Chapter 1 Sets

If you are looking for NCERT solutions or want to understand any topic of Chapter 1 more precisely then you have reached the right place. Here question explanation given in a very lucid and easy manner will facilitate you to learn mathematical concepts rapidly without confusions.

For your convenience, we have presented the NCERT Solutions for Class 11 Maths Chapter 1 Exercise 1.5 in the form of images along with its solution. We hope our effort will help you in comprehending the concepts with ease.

 Board SCERT, Kerala Text Book NCERT Based Class Plus One Subject Math's Textbook Solution Chapter Chapter 1 Exercise Ex 1.5 Chapter Name Sets Category Plus One Kerala

## Kerala Syllabus Plus One Math's Textbook Solution Chapter  1 Sets Exercises 1.5

### Chapter  1  Sets Textbook Solution

Kerala plus One maths NCERT textbooks, we provide complete solutions for the exercise and answers provided at the end of each chapter. We also cover the entire syllabus given by the Board of secondary education, Kerala state.

### Chapter  1  Sets Exercise   1.5

Let U ={1, 2, 3; 4, 5, 6, 7, 8, 9}, A = {1, 2, 3, 4}, B = {2, 4, 6, 8} and C = {3, 4, 5, 6}. Find

(i)

(ii)

(iii)

(iv)

(v)

(vi)

U ={1, 2, 3, 4, 5, 6, 7, 8, 9}

A = {1, 2, 3, 4}

B = {2, 4, 6, 8}

C = {3, 4, 5, 6}

(i)

(ii)

(iii)

(iv)

(v)

(vi)

If U = {a, b, c, d, e, f, g, h}, find the complements of the following sets:

(i) A = {a, b, c}

(ii) B = {d, e, f, g}

(iii) C = {a, c, e, g}

(iv) D = {fgha}

U = {a, b, c, d, e, f, g, h}

(i) A = {a, b, c}

(ii) B = {d, e, f, g}

(iii) C = {a, c, e, g}

(iv) D = {fgha}

Taking the set of natural numbers as the universal set, write down the complements of the following sets:

(i) {xx is an even natural number}

(ii) {xx is an odd natural number}

(iii) {xx is a positive multiple of 3}

(iv) {xx is a prime number}

(v) {xx is a natural number divisible by 3 and 5}

(vi) {xx is a perfect square}

(vii) {xx is perfect cube}

(viii) {xx + 5 = 8}

(ix) {x: 2x + 5 = 9}

(x) {xx ≥ 7}

(xi) {xx ∈ N and 2x + 1 > 10}

U = N: Set of natural numbers

(i) {xx is an even natural number}´ = {xx is an odd natural number}

(ii) {xx is an odd natural number}´ = {xx is an even natural number}

(iii) {xx is a positive multiple of 3}´ = {xx ∈ N and x is not a multiple of 3}

(iv) {xx is a prime number}´ ={xx is a positive composite number and x = 1}

(v) {xx is a natural number divisible by 3 and 5}´ = {xx is a natural number that is not divisible by 3 or 5}

(vi) {xx is a perfect square}´ = {xx ∈ N and is not a perfect square}

(vii) {xx is a perfect cube}´ = {xx ∈ N and is not a perfect cube}

(viii) {xx + 5 = 8}´ = {xx ∈ N and x ≠ 3}

(ix) {x: 2x + 5 = 9}´ = {xx ∈ N and x ≠ 2}

(x) {xx ≥ 7}´ = {xx ∈ N and x

(xi) {xx ∈ N and 2x + 1 > 10}´ = {xx ∈ N and ≤ 9/2}

If U = {1, 2, 3, 4, 5,6,7,8, 9}, A = {2, 4, 6, 8} and B = {2, 3, 5, 7}. Verify that

(i)  (ii)

U = {1, 2, 3, 4, 5, 6, 7, 8, 9}

A = {2, 4, 6, 8}, B = {2, 3, 5, 7}

(i)

(ii)

Draw appropriate Venn diagram for each of the following:

(i)

(ii)

(iii)

(iv)

(i)

(ii)

(iii)

(iv)

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?

is the set of all equilateral triangles.

Fill in the blanks to make each of the following a true statement:

(i)

(ii) Î¦′ ∩ A = …

(iii)

(iv)

(i)

(ii) Î¦′ ∩ A = U ∩ A = A

∴ Î¦′ ∩ A = A

(iii) A ∩ A′ = Î¦

(iv) U′ ∩ A = Î¦ ∩ A = Î¦

∴ U′ ∩ A = Î¦

#### Chapter 1: Sets EX 1.5 Solution- Preview

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