The two co-prime numbers are (9) and (20). What will be their LCM?
Advertisement
Answer and explanation
Correct answer: (180)
Step 1: (9=3^2) and (20=2^2\times5). Step 2: They have no common prime factor. Step 3: The LCM of co-prime numbers is their product, so (9\times20=180).
Frequently asked questions
What is the correct answer to this question?
(180)
Why is this the correct answer?
Step 1: (9=3^2) and (20=2^2\times5). Step 2: They have no common prime factor. Step 3: The LCM of co-prime numbers is their product, so (9\times20=180).
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Real Numbers. Topic: HCF and LCM using prime factorisation.
Advertisement