Quandaries
and Queries 

my name is Christine 

Hi Christine, When finding the lcm you should fisrt write each number as the product of primes. In your list all the numbers are primes except 4 and 4 = 2^{2}. I would start by proceeding through the list
Next look at 4 = 2^{2}. The lcm comstructed so far, 5 3 has no twos so to find the lcm of 3, 5 and 4 you need both twos. Hence
Next include 7. There are no sevens in the lcm so far so we need a 7.
Finally the 2. 2 divided the lcm we have constructed already so
Penny 

