Explanation

Let's find the pattern in the number series:

1, 6, 13, 22, 33, ?

Differences between terms:

6 - 1 = 5

13 - 6 = 7

22 - 13 = 9

33 - 22 = 11

The differences are increasing by 2: 5, 7, 9, 11...

Next difference: 13

So, next term = 33 + 13 = 46