Question

if a and b are two co prime numbers. what is their LCM?

Answer 1

Two numbers are said to be Co-prime If their H CF is 1 i. e,Both the numbers do not have Common factor other than 1 .
for Example 2 and 7 are Co-prime as their H CF is 1 i .e, 2 and 7 have no Common factor other than 1 .
But 2 and 4 are not Co _prime As Both have common factor as 2 .

If two Numbers are Co-prime then their L C M is equal to the Product of two .

for Example - 2 and 7 are Co-prime and their L c M is 2 x 7 = 1 4

Answer 2

What are co-primes?

Co-primes are the pair of those numbers whose common factor just includes 1 and they don't have more than two factors i.e 1 and number itself.

So , if a and b are Co-primes Then factors of →

a = 1 × a

b = 1 × b

LCM( a,b) = 1×a×b = ab

Therefore, LCM of two co-primes is product of them.

Answer→ The LCM of a and b where a and b are Co-primes is ab.
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