Question 1 .
- From the list of numbers: 25, 17, 16, 35, 8,4 find a factor of 40?
 
Answer↷
- 4 & 8 are the factors of 40
 
↝A factor is a number which completely divides a number.
Question 2.
- what's the Highest common factor of 12 and 20
 
Answer↷
- factors of 12⇢1,2,3,4,6,12
 - factors of 20⇢1,2,4,5,10,20
 - HCF of 12 & 20⇢ 4
 
Hence, 4 is the HCF of 12 & 20
↝HCF or highest common factor is the highest common number which completely divides the given numbers .