3. For two positive integers a and b, HCF(a, b) X LCM (a, b) = a × b.​

Answer:

Yeah, this equation is true and correct

Clear Explanation:

Let us take two numbers as 2 & 3

2 = 2 x 1

3= 3 x 1

Therefore, LCM (2,3) = 2 X 3

= 6

HCF (2,3) = 1

Therefore LCM (a,b) x HCF (a,b) = a x b

6 x 1 = 2 x 3

6 = 6

Hence Proved