10
26
21
If the numbers are 64 16 4 1 and 1/4 then the next number is 1/16 because each number is being divided by 4
44. You're adding 11 then 9 each time !
The next number is -21
49
32
50
7
49
10
225
the answer will be 21
26
36
It appears that they are increasing by odd numbers of 3 5 7 So the next number should be 16+9 = 25