16+10= 26
26-5= 21
21+10= 31
31-5= 26
The answer is 26
26
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.
37
16*3 = 48
22
26
This is the series of square numbers, (16= 4*4). The next number is 5*5=25.
625
481
24
37
The series is decreasing by consecutive perfect squares starting from 16^2 (256) and decreasing by 2^2 each time. Therefore, the next number in the series would be 4^2, which is 16.
16*3 = 48
22
It is: 16 squared = 256
24, they are going up in 3's, 13, 16, 19 and 18, 21 so next number is 24.
The next number in the series will be 66. The next number is found by adding the two previous numbers. (2+7=9, 9+7=16, etc...)