Question

what number should replace the question mark?
1st 2nd 3rd 4th

26	27	29	25
28	29	31	36
30	31	37	49
32	33	?	64
34	35	43	81

Answer 1

The first column has even numbers starting at 26.
The second column has odd numbers starting at 27.
The third column has prime numbers starting at 29.
The fourth column has square numbers starting at 25.