Did you know that riddles were once used as secret passwords in ancient taverns? 🍻 If you couldn’t solve the puzzle, no ale for you! Luckily, today’s challenge won’t bar you from happy hour, but it will flex your mental muscles.

We’ve cooked up a brain-teaser with a twist that looks simple… until your brain does a double-take. Ready to step inside and see if you’ve got the key?

Consider the numbers: 3, 4, 7, 10, 16, 21, 30, 40, ?

What is the next number?

Think you’ve cracked the code? The pattern piggybacks on two famous lists marching in sync. No fancy calculus, just a clever mashup. If you can name both lists, the next term practically introduces itself.

Subscribe to keep reading

This content is free, but you must be subscribed to The Daily Riddle to continue reading.

Already a subscriber?Sign in.Not now

Keep Reading