0
Wiki User
Because 2 goes into 21 ten times - with 1 remaining - so you divide the 1 by 2 to get an exact answer ! 1 divided by 2 is 1/2 or 0.5 as a decimal !
21
105 can be divided by 1, 3, 5, 7, 15, 21, 35, 105.
105
0.019
5
The average is 35. (21 + 35 + 49 (=105), divided by 3.)