Q. 14.7( 64 Votes )

Write all the factors of the following numbers:

(a) 24 (b) 15

(c) 21 (d) 27

(e) 12 (f) 20

(g) 18 (h) 23

(i) 36

Answer :

Factors of a number are the numbers that can be multiplied by to get the original number.


To factor a number is to break it into smaller number.


(a) 24


1 × 24 = 24


2 × 12 = 24


3 × 8 = 24


4 × 6 = 24


So,


1, 2, 3, 4, 6, 8, 12 and 24 are the factors of 24.


(b) 15


1 × 15 = 15


3 × 5 = 15


So,


1, 3, 5 and 15 are the factors of 15.


(c) 21


1 × 21 = 21


3 × 7 =21


So,


Factors of 21 are 1, 3, 7 and 21.


(d) 27


1 × 27 =27


3 × 9 = 27


So,


1, 3, 9 and 27 are the factors of 27.


(e) 12


1 × 12 =12


2 × 6 =12


3 × 4 =12


So,


1, 2, 3, 4, 6 and 12 are the factors of 12.


(f) 20


1 × 20 =20


2 × 10 =20


4 × 5 = 20


So,


1, 2, 4, 5, 10 and 20 are the factors of 20.


(g) 18


1 × 18 =18


2 × 9 =18


3 × 6 =18


So,


1, 2, 3, 6, 9, and 18 are the factors of 18.


(h) 23


1 × 23 =23


So,


1 and 23 are the factors of 23.


(i) 36


1 × 36 = 36


2 × 18 = 36


3 × 12 = 36


4 × 9 = 36


6 × 6 = 36


So,


Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18 and 36.


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