LCM of 15 and 20 Examples
Example 1: Find the smallest number that is divisible by 15 and 20 exactly.
LCM is the smallest number that is exactly divisible by 15 and 20.Multiples of 15 and 20:
- Multiples of 15 = 15, 30, 45, 60, 75, 90, 105.
- Multiples of 20 = 20, 40, 60, 80, 100, 120, 140.
Common multiples in 15 and 20 is 60.
Therefore, the LCM of 15 and 20 is 60.
Example 2: GCD and LCM of two numbers are 5 and 60 respectively. If one number is 15, find the other number.
Solution:
Let the other number be x.
GCD × LCM = 15 × x
⇒ x = (GCD × LCM)/15
⇒ x = (5 × 60)/15
⇒ x = 20
Therefore, the other number is 20.
LCM of 15 and 20: How to Find LCM of 15 and 20
LCM of 15 and 20 is 60. LCM is an abbreviation for Least Common Multiple and is the least common multiple of both 15 and 20. Whereas, a few of the multiples are 15, 30, 45, 60, 75, 90, and 105 for 15; 20, 40, 60, 80, 100, and 120 for 20.
In this article, we will discuss LCM of 15 and 20 is calculated by division method, prime factorization, and by listing multiple methods.
Table of Content
- What is LCM?
- What is the LCM of 15 and 20?
- LCM of 15 and 20 Calculator
- How to Find LCM of 15 and 20?
- LCM and HCF of 15 and 20
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