Algodoo

You Have 12 identical looking balls.

One of the ball is defective. Type of defect is that It has different weight than rest 11.

We don't know if this ball is heavier or lighter than rest.

You fourtunatly have a Simple Weighing Balance. But do not have measuring weights.

You are genius if you find out defective ball and also findout if it's heavier or lighter.

If you use weight balance five time - Your Logics Are Poor.

If you use weighing balance four times- Your Logics are above average.

If You do it in three times You are Genius......

No Cheating.....

Suggest Your Friend to test theirs.......