2,3 are primes. ∴ Each number has no factor other than 1 and itself. ∴ Their LCM is the product of the numbers. ∴ LCM of 1,2,3=2×3=6. Answer- Option A
If LCM and HCF of two numbers are equal then, both the numbers are same and equal to LCM or HCF.
Find the LCM and HCF of 198 and 144 and verify HCF and LCM equal to product of numbers