Puzzle #13 — Answer: A) 89
9 + (9×9) – (9÷9) = 9 + 81 – 1 = 89
Same structure as puzzle #10. If you got #10 right and #13 wrong, the bigger numbers spooked your brain.
Your score: __/20
Next: ➡️ Puzzle #14
20 Simple Math Problems That 90% of Adults Get Wrong
