Question

Your friend chooses an integer between 0 and 100. You have to find out that number by asking questions, but your friend can only answer 'yes' or 'no' . What strategy would you use?

Answer 1

If the chosen integers is given between 1-100 then go on doing halves such as is it between 50 ,then is it between 25 then 12, 6, 3, 2, 1,

Answer 2

First ask whether it is an odd or an even number.
Then ask whether it is in between 1-50 or 51-100 , then thin the margin...and continue,,,......