Ncert solutions

Ncert solutions

Grade 6

Playing With Numbers | Exercise 3.3

Question 7

Q1) Find the common factors of :

(a) 20 and 28 (b) 15 and 25 (c) 35 and 50 (d) 56 and 120

SOLUTION:

(i) 20 and 28

factors of 20: 1,2,4,5,10,20

factors of 28: 1,2,4,7,14, 28

common factors=1,2,4.

ii) 15 and 25

Factors of 15: 1,3,5,15

factors of 25: 1,5,25

common factors=1,5

iii) 35 and 50

factors of 35: 1,5,7,35

factors of 50: 1,2,5,10,25, 50

common factors=1,5

iv) 56 and 120

factors of 56: 1,2,4,5,10,20

factors of 120: 1,2,4,7,14, 28

common factors=1,2,4.

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Question 7

Q1) Find the common factors of :

(a) 20 and 28 (b) 15 and 25 (c) 35 and 50 (d) 56 and 120

SOLUTION:

(i) 20 and 28

factors of 20: 1,2,4,5,10,20

factors of 28: 1,2,4,7,14, 28

common factors=1,2,4.

ii) 15 and 25

Factors of 15: 1,3,5,15

factors of 25: 1,5,25

common factors=1,5

iii) 35 and 50

factors of 35: 1,5,7,35

factors of 50: 1,2,5,10,25, 50

common factors=1,5

iv) 56 and 120

factors of 56: 1,2,4,5,10,20

factors of 120: 1,2,4,7,14, 28

common factors=1,2,4.

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