Only 46% of college grads can solve this high school math riddle—can you?

It looks simple at first glance, but this puzzle has left more than half of test-takers scratching their heads. All you need is a sharp eye, a bit of logic, and 15 seconds on the clock.

The riddle

You’re given three symbols — a sun, a cloud, and a moon. Each one represents a number. Your task is to work out their values using the clues from the equation, then add them together.

Sounds easy, right? But here’s the catch: many overthink it, and that’s why only 46% of graduates manage to get it right. The trick is to keep calm, follow the logic, and resist the urge to complicate things.

So, here’s the puzzle:

• Three suns together equal 9.

• A cloud plus two suns equals 12.

• Two moons plus a cloud equal 16.

• Finally, what is the value of a sun + a cloud + a moon?

Got it? Time to put your skills to the test.

Working it out

Step one: If three suns make 9, that means each sun = 3.

Step two: A cloud plus two suns equals 12. Since two suns equal 6, the cloud must be 6.

Step three: Two moons plus a cloud equal 16. We already know the cloud is 6, so the two moons together make 10. That means each moon = 5.

Now for the final step: Sun (3) + Cloud (6) + Moon (5) = 14.

But the full equation adds another twist. The puzzle asks you to multiply that total by the number of different symbols involved — three. So, 14 × 3 = 42.

If you landed on 42, you’ve cracked it. If not, don’t worry — even seasoned puzzle lovers can trip over the details.

Why this matters

Puzzles like this aren’t just about flexing your maths muscles. They test pattern recognition, logical reasoning, and problem-solving speed — the same skills that employers prize in the workplace. According to research in cognitive psychology, working on brain teasers can also sharpen memory and boost creative thinking.

And honestly? They’re fun. You can try them alone, use them to liven up a dull family dinner, or even post them on social media to spark some friendly competition.

So, next time you’re tempted to scroll past a “simple” equation, give it a go. You might be surprised at what your brain can do under pressure — and whether you’d fall into the 54% who miss the mark.

Would you have solved it in under 15 seconds?

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Brandon Lee

Hi, I’m Brandon from the Decatur Metro team. I guide you through the trends and events reshaping our region.