Aargh! those balls....

Algebra Level 3

There are 12 balls. 11 of them are identical. One of them differs in weight from the others. You are given a pair of balances but no weights. What is the least number of weighings in which the odd ball can be sorted out?

Note: Obviously the rocks have to be weighed against one another since you are given no weights.

×

Problem Loading...

Note Loading...

Set Loading...