Mathematics Trivia

2

If you go out to eat at a restaurant in a foreign country, and you must pay a 15% service fee, followed by a 12% tax on everything, even the service fee, what actual exact percentage did you pay above the base price?

17

If you have 1000 pennies, 1000 nickels, 1000 dimes, 1000 quarters, and 1000 half dollars, then how much do you have altogether?

9

If you looked at a clock in the mirror and the time on the clock face appeared to read 8:20, what time would it be in reality?

15

Three kids put up their own money to make a lemonade stand: the first kid puts up $6, second $3, and the last $1. If they take in $100 and share the profits equally, how much of the $100 will go to the first kid?

15

A jogger can run down a hill five times as fast as she can run up the hill. If a round-trip jog up and down a hill takes one and one-half hours, how long does it take her to descend the hill?

16

A person is rowing a boat 2 miles from shore, at 5 miles per hour. Immediately on arrival at the shore he takes a taxi 5 miles down the shore, averaging 20 miles per hour. How long will this trip take?

9

Three people have 12 marbles each. What's the minimum number of marbles that must be moved between these people in order that the resulting ratio is 1:2:3?

13

If you roll three dice at the same time, what's the probability of rolling a sum of 3 or 4?

1

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?

7

Can you represent the number 69 in binary (base 2) code, using only ones and twos?

18

An airplane departs at exactly 8:08:08 a.m. and arrives at its destination at exactly 3:03:03 p.m. To the nearest second, exactly what was the plane's travel time?

6

There are approximately 1.6 million of these in every mile. What are they?

20

In how many different ways could a basketball player score exactly 8 points in a game? (Combinations of foul shots, 2-pointers, and 3-pointers).

12

As you sit in your stopped car at a railroad crossing, a train travelling at 60 miles per hour takes twenty seconds to pass you. How many feet long is the train?

14

The numbers game: if I said, 24 = # of h. in a d., you would say "hours in a day." See if you can figure out this one: 9 = # of p. in the s.s.