# can you figure out how five plus nine equals six? [closed]

Quick riddle here for you 5 + 9 = 6... how?

I look forward to hearing your answers, and I am writing this part in the hope it allows me to submit. (it did!)

• Where did you get this puzzle from? Or did you make it yourself? Dec 12, 2023 at 1:51
• Modulo arithmetric: if you count five points around a eight-pointed compass rose, then nine, you wind up on the sixth point. But nine is more than a full circle... Dec 12, 2023 at 12:22

I suppose if you use Roman numerals to write the 9, and interpret the + to mean concatenation, you would have something like

5IX

which looks a lot like

SIX

Consider 5 and 9 as

seven-segment displays (using overhangs, of course).

If one uses this

truth table: 0, 0 -> 1; 0, 1 -> 0; 1, 1 -> 1 (1, 0 can be either),

5+9 does indeed equal 6. Note, however, that this can be the rot13(KABE bcrengbe), which is just rot13(gur vairefr bs ovanel nqqvgvba zbq 2)!

– Stef
Dec 12, 2023 at 8:34
• Yep. I just put it in rot13 because spoiler boxes are annoying. Dec 12, 2023 at 14:00

If 5 is:

The number of children

and if 9 is:

The number of months of pregnancy successfully completed, leading to a birth

then 6 is:

The number of children resulting