IQ puzzle

0+3 =0
1+4 =5
2+5 =12
8+11 =96

This puzzle can be found on the web but without the 0 + 3 = ? line. This is my variant. This is nothing spectacular. The numbers to be added form two series and therefore are infinite in both directions. The differences in the totals increase by 2 each time and so form a continuous series of odd numbers.

There's no need for calculation, simply make a list of the odd numbers and add 'em up down to the line required, e.g. 8 + 11 = ?

5
7
9
11
13
15
17
19

I'm bone lazy and couldn't be bothered adding them. I looked at the list, noted its middle lay between 11 and 13, making 12 the average of the 8 numbers, and remembering tables learnt at school 75+ years ago, automatically said (or perhaps sang), 12 8s are 96.

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