What four weights can be used to balance from 1 to 30 pounds?

What does this rebus riddle mean?

Why is the Hole below a Lock?

When it is alive we sing, when it is dead we clap our hands. What is it?

What runs around the whole yard without moving?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

I’m tall when I’m young, and I’m short when I’m old. What am I?

what's the probability of getting a king or a queen from a pack of 52 cards?