Question

The HCF and LCM of two numbers are 2 and 140. If one of the number is 20, find the other.​

Answer 1

Answer:

14

Step-by-step explanation:

let the no. be x

20 × x = 2 × 140

x= 2× 140 /20

so , after cutting the ans will be

14

Answer 2

Answer:

14 is the required number.

Step-by-step explanation:

For any two positive integers  a  and  b, we have

             HCF (a,b)  X  LCM (a,b)  =  a  X  b

Given;

             HCF = 2

             LCM = 140

                   a = 20

                   b = ?

According to question;

             2  X  140  =  20  X  b

               280/20  =  b

                        14  =  b