Write all factors of the following numbers. (i) 48 (ii) 36 (iii) 28

1.	Write all factors of the following numbers. (i) 48 (ii) 36 (iii) 28 (iv) 100 (v) 125
Answer» (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 × 50 100 = 4 × 25 100 = 5 × 20 100 = 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.

Write all factors of the following numbers. (i) 48 (ii) 36 (iii) 28 (iv) 100 (v) 125

Answer»

(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

100 = 4 × 25

100 = 5 × 20

100 = 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.