If the LCM of two numbers a and b is 60 and their HCF is 15. Determine their mean proportion.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 30.
Given that,
The LCM of two numbers a and b is 60 and HCF is 15
As we know
⇒ a × b = LCM × HCF
⇒ a × b = 15 × 60
⇒ a × b = 900
Hence,
Their mean proportion = √(a × b) = √900 = 30