Correct Answer - Option 3 : 1 : 60
Given:
HCF = 6
Product of two numbers = 2160
Concept used:
If 'a' and 'b' are two numbers, then LCM × HCF = a × b
Calculations:
Let the first number be 'a' and second number be 'b'.
LCM × HCF = a × b
⇒ LCM × 6 = 2160
⇒ LCM = 360
HCF : LCM = 6 : 360
⇒ 1 : 60
∴ The ratio between the H.C.F. and L.C.M. of those two numbers is 1 : 60.