It is: (205+21)/2 = 113
21
205 is greater than 21, but that is based on the fact that there are no visible decimal points.
19.5 is halfway between 18 and 21
The answer is 21. 21 X 21=441 and that's between 400 and 450
The next number will be 13+21 = 34
the next number is 21 because it is adding the last number stated.
22
The Tonight Show with Jay Leno - 1992 21-205 was released on: USA: 3 September 2013
It is: (18+21)/2 = 19.5
75
35