Guess my number in 7 questions
Think of a number from 1 to 100 and this will find it in seven questions, then let you try the same trick on it.
Think of a number and keep it secret. Answer honestly and watch how few questions it takes.
Numbers from 1 to
Is your number
50?
1100
100 numbers still possible
Questions used: 0 of 7
Largest range that can remain after each wrong guess:
100502512631
Want the why behind it?
Read why halving always wins →Advertisement