21
-1, -2, -3, ..., -20
14
9 and 15
10, 20, 30
10, 20, 30
You am 14 .
The Least Common Multiple of 3 and 20 is 60.
The Least Common Multiple (LCM) for 20 3 is 60.
Well, I'd be quite tempted to go for 14 if the question wasn't "What number am you?"
no
4 is greater than 3 and is a factor of 20.
The least common multiple of 2 , 3 , 20 = 60