The method adopted by the classmate is the right but the very long procedure to find out the least common multiple. It is very difficult and also is a very time-consuming method to first write the multiples of all the numbers and then find out the smallest among them.

Final Statement:

Yes, the procedure given in the question is right but the procedure is tedious and time-consuming.

Final Statement:

Yes, the procedure given in the question is right but the procedure is tedious and time-consuming.