Daily Problem
One problem. Every day. Everyone.
The same challenge for every learner, teacher, and parent — today, at the same time. 3 attempts, 2 hints, zero login. Share your result.
Daily #0
Abstract ReasoningAll gradesstandard
There are 10 people in a room. Every person shakes hands with every other person exactly once. How many handshakes are there?
How it works
01
Same problem for everyone
Midnight UTC: a new challenge drops. Every learner, teacher, and parent gets the same one.
02
Three attempts
Hints unlock after each wrong answer. The explanation appears once you finish.
03
Share your result
One tap sends a spoiler-free emoji grid to any group chat. Start conversations.
04
Build a streak
Your streak is stored locally — no account needed. Come back tomorrow to keep it alive.