You have the misfortune to own an unreliable clock. This one loses exactly 13 minutes every hour. It is now showing 11:45am and you know that is was correct at midnight, when you set it. The clock stopped two hours ago, what is the correct time now?
[Ref: ZMNT] © Kevin Stone
You roll a die until the total exceeds 12, what is the most likely total?
I bet you $1 that if you give me $2, I will give you $3 in return. Would you bet with me?
How many squares, of any size, are on a board divided up into 6 squares by 6 squares?
What number comes next in this sequence:
1 8 9 64 25 216 49 ==?==
[Ref: ZPPV] © Kevin Stone