If M is the least common multiple of 90,196, and 300, which of the following is NOT a factor of M?
Choose one
A) 600  B) 700  C) 900  D) 2,100  E) 4,900
first calculate the LCM of the given numbers   90 = 2*3*3*5   196=2*2*7*7   300=2*2*3*5*5   LCM = 2*2*3*3*5*5*7*7 this is the number M.   now check each number whether a factor of M.   600nswer 600 is 600.
<result>A</result>
If M is the least common multiple of 90,196, and 300, which of the following is NOT a factor of M?