ML Aggarwal Sets Exe-5.1 Class 6 ICSE Maths Solutions. We Provide Step by Step Answer of Exe-5.1 Questions for Sets as council prescribe guideline for upcoming board exam. Visit official Website CISCE for detail information about ICSE Board Class-6.

## ML Aggarwal Sets Exe-5.1 Class 6 ICSE Maths Solutions

Board | ICSE |

Publications | Avichal Publishig Company (APC) |

Subject | Maths |

Class | 6th |

Chapter-5 | Sets |

Writer | ML Aggarwal |

Book Name | Understanding |

Topics | Solution of Exe-5.1 Questions |

Edition | 2023-2024 |

**Sets Exe-5.1**

**ML Aggarwal Class 6 ICSE Maths Solutions**

Page-98

**Question 1. State which of the following collections are sets:**

(i) collection of odd natural numbers less than 50

(ii) collection of four colours of a rainbow

(iii) collection of first three days of a week

(iv) collection of all tall students of your class

(v) Collection of all lovely flowers.

(vi) collection of all rich people of Bangalore

(vii) collection of some multiples of 5

(viii) collection of all even integers which lie between -5 and 15

(ix) collection of three youngest students of your class

(x) collection of three healthy students of your class

**Answer:**

(i) It is a set.

If we denote the given set by A, then A {1, 3, 5, 7, 4, 49}

(ii) It is not a set because the given collection is not well-defined-people may differ on

colours of a rainbow.

(iii) It is a set.

If we denote the given set by A, then A (Sunday, Monday, Tuesday}

(iv) It is not a set because the given collection is not well-defined-people may differ

whether a student is tall or not.

(v) Collection of all lovely flowers. It is not Set.

(vi) It is not a set because the given collection is not well-defined-people may differ on whether a person is rich or not.

(vii) It is not a set because the given collection is not well defined-people may differ on which are multiples of 5.

(viii) It is a set.

If we denote the given set by A, then A = {4-2, 0, 2, 4, 6, 8, 10, 12, 14}

(ix) It is a set because the given collection is well define – people can choose three youngest students of their classes.

(x) It is not a set because the given collection is not well defined-people may differ on whether a student is healthy or not.

**Question 2 . Let E = {even integers}. Insert the appropriate symbol ϵ or ∉ in the blanks:**

(i) 10 …. E

(ii) -8 …. E

(iii) 13 … E

(iv) {6} …. E

(v) a …. E

(vi) -4, 12, …. E

**Answer:**

E = {even integers}

(i) 10 **∈** E

(ii) -8 **∈** E

(iii) 13 **∉** E

(iv) {6} **∈** E

(v) a **∉** E

(vi) -4, 12, **∈** E

**Question 3. Let V = {vowels in English alphabet}. Write which of the following statements are true and which are false :**

(i) c ϵ V

(ii) {a} ϵ V

(iii) a, e, i ϵ V

(iv) a, b ϵ V

(v) {a, u} ∉ V

(vi) {a, o, u} ϵ V

**Answer:**

(i) Which is False

(ii) Which is False

(iii) Which is True

(iv) Which is False

(v) Which is True

(vi) Which is True

**Question 4. Write the following sets in roster form:**

(i) the set of first five odd counting numbers

(ii) the set of all even natural numbers less than 101

(iii) {months of year whose names begin with a vowel}

(iv) {one digit natural numbers which are perfect squares}

(v) the set of multiples of 7 which lie between -20 and 25

(vi) {factors of 36}

(vii) {prime factors of 360}

(viii) the set of whole numbers which are multiples of 5

(ix) the set of all letters in the word ‘CHENNAI’

(x) The set of all vowels in the word ‘MUSSOORIE’

(xi) the set of all consonants in the word ‘MATHEMATICS’

**Answer:**

(i) The given set can be written as in roster form :

{1,3,5,7,9}

(ii) The given set can be written as in roster form :

{2,4,6,8 ……………… 98,100}

(iii) The given set can be written as in roster form :

{April, Aguste, October}

(iv) The given set can be written as in roster form :

{1, 4, 9}

(v) The given set can be written as in roster form :

{-14, -7, 0, 7, 14, 21}

(vi) The given set can be written as in roster form :

{1,2,3,4,6,9,12,18,36}

(vii) The given set can be written as in roster form :

{2,3,5}

(viii) The given set can be written as in roster form :

{0,5,10,15,20,25,………..}

(ix) The given set can be written as in roster form :

{C, H, E, N, A, I}

(x) The given set can be written as in roster form :

{U, O, I, E}

(xi) The given set can be written as in roster form :

{M, T, H, C, S}

**Question 5. Write the following sets in tabular form:**

(i) {x : is a natural number and x < 7}

(ii) {x : x e W and x ≤ 5}

(iii) {x : x is a month of a year having less than 31 days}

(iv) {x | x is a letter in the word ‘CIRCUMFERENCE’}

(v) {x | x is a vowel in the word ‘NOTATION’}

(vi) (x : x is a digit in the numeral 110526715}

(vii) {x : x is a factor of 48}

(viii) (x : x is a multiple of 11 and 0 ≤ x < 80}

(ix) [y : y is a two digit natural number divisible by 10}

**Answer:**

(i) The given set can be written as in tabular form :

{1,2,3,5,6,}

(ii) The given set can be written as in tabular form :

{0,1,2,3,4,5}

(iii) The given set can be written as in tabular form :

{February, April, June, September, November}

(iv) The given set can be written as in tabular form :

{C,I,R,U,M,F,E,N}

(v) The given set can be written as in tabular form :

{O,A,I}

(vi) The given set can be written as in tabular form :

{1,0,5,2,6,7}

(vii) The given set can be written as in tabular form :

{1,2,3,4,6,8,12,16,24,48}

(viii) The given set can be written as in tabular form :

{0,11,22,33,44,55 ………..}

(ix) {Y : Y IS A TWO DIGIT NATURAL NUMBER DIVISIBLE BY 10} =

{10,20,30,40,50………….}

**Sets Exe-5.1**

**ML Aggarwal Class 6 ICSE Maths Solutions**

Page-99

**Question 6. Write the following sets in roster form and also in set builder form:**

(i) the set of integers which lie between -2 and 3 (both inclusive)

(ii) the set of letters in the word ‘ULTIMATUM’

(iii) {months of a year whose names begin with J}

(iv) the set of single digit whole numbers which are perfect squares

**Answer:**

(i) The given set can be written as {-2, -1, 0, 1, 2, 3} (roster form)

{x : x ∈ l, -2 ≤ x ≤ 3} (set builder form)

(ii) The given set can be written as {U,L,T,I,M,A} (roster form)

{x : x is a letter in the word ‘ULTIATUM’} (set builder form)

(iii) The given set can be written as {Jan, June, July} (roster form)

{x : x is a month of a year whose names begin with j} (set builder form)

(iv) The given set can be written as {0,1,4,9} (roster form)

{x : x is prefect square one digit number} (set builder form)

— : End of ML Aggarwal Sets Exe-5.1 Class 6 ICSE Maths Solutions :–

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