Mathematics Trivia

17

If you give me $100, then I will have half as much money as you, but if I give you $100, then you'll have five times as much money as I do. How much does each of us have now?

13

In a single-elimination sports tournament beginning with 64 teams, how many games are played altogether until only one team, the champion, remains?

8

Can you think of two numbers for which the sum of their squares is 628 and the difference of their squares is 340?

3

If a lion can consume 6 ounces of meat every 20 minutes, how many pounds can she consume in 2 1/2 hours?

3

If you roll a pair of dice once, which is a more likely outcome? An odd sum or an even sum, or are they both equally likely?

16

You have a rectangular piece of dough that is 20 by 30 inches and you want to make as many circular cookies of diameter 2 inches as possible. Theoretically, how many cookies can you make until all the dough is used?

17

On a quiz show, you can pick two envelopes. One envelope has $1000 in it, one has $500, one has $300, one has $200, one has $50, and one is empty. How many different amounts can be won?

6

In a scale model drawing of a car, the linear scale is 1:20. If it would take 1/4 liter of paint to cover the outside of the model of the car, how much paint would it take to cover the real car?

16

What is the smallest number which has both 72 and 80 as factors?

4

What is the sum of the first one-hundred odd numbers, starting with 1?

9

Conversion problem: If in Switzerland one liter of gas costs 1 Swiss Franc, one dollar is worth about 1.30 Swiss Francs, and there are about 3.8 liters in a gallon, then what is the cost of one gallon of gas in Switzerland in dollar terms?

18

A high school senior said she knows all the seniors, half the juniors, 1/3 of the sophomores, and 1/4 of the freshmen. If each class has the same numbers of students, then she knows what fraction of the school?

2

What day of the week was January 1, 1995?

13

Let's say a pizzeria charges for their pies proportional to the size of the pie. If a 10" pizza costs $10, then what should a 12" pizza cost?

3

If, after receiving a 20% discount when buying a television set, and after paying 7% tax, you paid $642, what was the original marked price of the TV set?