Correct Answer - Option 1 : 15ab
Given:
The LCM of 3a, 15ab
Calculation:
The prime factor of 3a, 15ab = 3 , 5, a, b
The LCM = 3 × 5 × a × b = 15ab
∴ The LCM of 3a, 15ab is 15ab.
The Least Common Multiple ( LCM ) is also referred to as the Lowest Common Multiple ( LCM ) and Least Common Divisor ( LCD) . For two integers a and b, denoted LCM(a, b), the LCM is the smallest positive integer that is evenly divisible by both a and b.
