There are 150 members in my club. We decided to have a ping pong tournament. All the members came forward to play in the game. Every time a member loses a game he is out of the tournament. There are no ties. Can you tell how many games must be played in order to determine the champion?

If you go to the movies and you’re paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

A girl was eight years old on her first birthday. How could that be?

If you place 1 cake of soap on a pan of a scale and 3/4 cake of soap and a 3/4 pound weight on the other, the pans balance. How much does a cake of soap weigh?

A man forgot the secret code to open his locker. But he remembers the following clues: Fifth number plus the third number equals fourteen. First number is one less than twice the second number. Fourth number is one more than the second number. Second number plus the third number equals ten. Sum of all five numbers is 30. Can you find out the secret code to help him out?

Three men go to stay at a hotel and they are charged $30.00 for the room. They split the cost with ten dollars each. Later the manager finds out that the rate is $25 and gives the bellboy $5 to return to the guests. On the way to the room the bellboy reasons that $5 would be difficult to split among three people so he pockets $2 and gives $1 to each person. Now each person paid $10 and got back $1. So they paid $9 each, totaling $27. The bellboy has another $2, adding up to $29. Where is the missing dollar?

What is half of 2+2?

How can half of 12 be 7?

A half is a third of it. What is it?

If 1/2 of 5 is 3, then what is 1/3 of 10?

Prove that taking away 1 from 19 makes 20.

Divide 30 by 1/2 and add 10. What is the answer?

Which is correct, 9 and 5 is 13 or 9 plus 5 is 13?

Make 1000 using eight 8s. You can only use addition.

How many times can you subtract the number 5 from 25?