# Can You Solve This Tricky Numbers Riddle in Less Than 60 Seconds?

This numbers riddle is stumping even the savviest mathematicians.

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## This number riddle is stumping the savviest mathematicians

For some people, math comes naturally. For others, not so much. But this number riddle is stumping even the savviest mathematicians. The riddle was created by Adam Spencer, comedian, mathematician, and author of The Number Games. In his riddle, Spencer wrote down the numbers 1 through 19 out of numerical order. To solve it, you need to figure out the specific way he ordered the first 14 numbers and finish the riddle by adding the last five. Here it is:

8, 18, 11, 15, 5, 4, 14, 9, 19, 1, 7, 17, 6, 16, ?, ?, ?, ?, ?

Confused? Here’s a hint: you don’t actually need to be a mathematician to solve this.

If you’re still stuck, here’s another hint. Which five numbers are missing? 2, 3, 10, 12, and 13. We just need to figure out which order those should be in. It can’t be numerical since the rest of the riddle is out of order… so, what is it?