✓ Effortless Math · Free Game

Guess My Number

The computer picks a secret whole number. After each guess it tells you "too high" or "too low." Narrow the range, count your guesses, and learn the binary-search strategy.

Guesses
0
Still possible
1–100
Best (log₂)
7
I'm thinking of a number
Between 1 and 100

Your guesses

You got it!