## LCM and HCF

#### LCM and HCF

1. LCM of two numbers is 225 and their HCF is 5. If one number is 25, the other number will be:

1. Given , LCM = 225 , HCF = 5 , First Number = 25 , Second Number = ?
We can find the Second Number with the help of given formula ,
LCM × HCF = 1st Number× 2nd Number
⇒ 225 × 5 = 25 × 2nd Number

##### Correct Option: C

Given , LCM = 225 , HCF = 5 , First Number = 25 , Second Number = ?
We can find the Second Number with the help of given formula ,
LCM × HCF = 1st Number× 2nd Number
⇒ 225 × 5 = 25 × 2nd Number

 2nd Number = 225 × 5 = 45 25

1. The LCM of two numbers is 864 and their HCF is 144. If one of the number is 288, the other number is :

1. Here , LCM = 864 , HCF = 144 , First number = 288 , Second number = ?
As we know that ,
LCM × HCF = First number × Second number

 Second number = LCM × HCF First number

##### Correct Option: C

Here , LCM = 864 , HCF = 144 , First number = 288 , Second number = ?
As we know that ,
LCM × HCF = First number × Second number

 Second number = LCM × HCF First number

 Required number = 864 × 144 = 432 288