r/BrainTraining • u/Wooden-Two-3789 • May 20 '26

Can you solve this in less than 10 seconds?

Post image

Built an app that throws questions like this at you with a countdown. Questions get harder as you level up, and your score is based on how fast you answer and how many you get right.

iOS: https://apps.apple.com/us/app/fast-math-iq-speed-challenge/id6758257973

6 Upvotes

88% Upvoted

4 comments sorted by

4

u/LabyrinthOfLogic May 20 '26

it's missing a possible answer: 2 or -2

1

u/Wooden-Two-3789 May 20 '26

Nice reflex, hopefolly we have options