RBSE Solutions for Class 6 Maths Chapter 2 Relation Among Numbers Ex 2.1 is part of RBSE Solutions for Class 6 Maths. Here we have given Rajasthan Board RBSE Class 6 Maths Chapter 2 Relation Among Numbers Exercise 2.1.

Board |
RBSE |

Textbook |
SIERT, Rajasthan |

Class |
Class 6 |

Subject |
Maths |

Chapter |
Chapter 2 |

Chapter Name |
Relation Among Numbers |

Exercise |
Ex 2.1 |

Number of Questions |
7 |

Category |
RBSE Solutions |

## Rajasthan Board RBSE Class 6 Maths Chapter 2 Relation Among Numbers Ex 2.1

Question 1.

Write all factors of the (RBSESolutions.com) following numbers.

(i) 48

(ii) 36

(iii) 28

(iv) 100

(v) 125

Solution.

(i) Factors of 48

48 = 1 × 48

48 = 2 × 24

48 = 3 × 16

48 = 4 × 12

48 = 6 × 8

48 = 8 × 6

∴ All factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24 and 48.

(ii) Factors of 36

36 =1 × 36

36 = 2 × 18

36 = 3 × 12

36 = 4 × 9

36 = 6 × 6

∴ All factor of 36 are 1,2, 3, 4, 6, 9, 12, 18 and 36.

(iii) Factors of 28

28 =1 × 28

28 = 2 × 14

28 = 4 × 7

28 = 7 × 4

∴ All factors of 28 are 1,2, 4, 7, 14 and 28.

(iv) Factors of 100

100 = 1 × 100

100 = 2 × 50

1oo = 4 × 25

1oo = 5 × 20

1oo = 10 × 10

∴ All factors of loo are 1, 2, 4, 5, 10, 20, 25, 50 and 100.

(v) Factor of 125

125 = 1 × 125

125 = 5 × 25

125 = 25 × 5

∴ All factors of 125 are 1, 5, 25 and 125.

Question 2.

Write the first five multiples (RBSESolutions.com) of the following numbers :

(i) 7

(ii) 12

(iii) 17

(iv) 15

(v) 18

Solution.

(i) First five multiples of 7

7 × 1 = 7

7 × 2 = 14

7 × 3 = 21

7 × 4 = 28

7 × 5 = 35

Thus, first five multip’es of 7, are 7.

(ii) First five (RBSESolutions.com) multiples of 12

12 × 1 = 12

12 × 2 = 24

12 × 3 = 36

12 × 4 = 48

12 × 5 = 60

Thus first five multipes of 12 are 12. 24, 36, 48 and 60.

(iii) First five multiples of 17

17 × 1 = 17

17 × 2 = 34

17 × 3 = 51

17 × 4 = 68

17 × 5 = 85

Thus, first five multiples of 17 are 17, 34, 51, 68 and 85.

(iv) First five multiples of 15

15 × 1 = 15

15 × 2 = 30

15 × 3 = 45

15 × 4 = 60

15 × 5 = 75

Thus, first five multiples of 16 are 15, 30, 45, 60 and 75.

(v) First five (RBSESolutions.com) multiples of 18

18 × 1 = 18

18 × 2 = 36

18 × 3 = 54

18 × 4 = 72

18 × 5 = 90

Thus, first five multiples of 18 are 18, 36, 54, 72 and 90.

Question 3.

Write all prime numbers between 10 and 30.

Solution.

All prime numbers between 10 and 30 are 11, 13, 17, 19, 23 and 29.

Question 4.

Write the smallest (RBSESolutions.com) prime number.

Solution.

Smallest prime number is 2.

Question 5.

Which of the following numbers have 6 as a factor?

6, 10, 12, 15, 18, 25, 30, 38, 46

Solution.

Numbers 6, 12, 18, 30 have 6 as a factor.

Question 6.

Write 3 numbers which are multiples of 4 and 6.

Solution.

12 = 4 × 3, 6 × 2

24 = 4 × 6, 6 × 4

36 = 4 × 9, 6 × 6

Three numbers which are multiples of 4 and 6 are 12, 24 and 36.

Question 7.

State whether (RBSESolutions.com) True or False

(i) 108 is a multiple of 9.

(ii) 7 is a factor of 27.

(iii) The sum of two prime numbers is an even number.

(iv) Every prime number is odd.

(v) 1 is a factor of every number.

(vi) Multiple of each number is less than the number itself.

(vii) Factor of each number is less than the number itself.

Solution.

(i) True

(ii) False

(iii) False

(iv) False

(v) True

(vi) False

(vii) True

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