Mathematics Trivia

15

What will be the units digit of the number represented by 3 to the 24th power?

5

In how many different ways can the opening pair of moves be made in a game of chess - one white move followed by one black move.

5

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?

20

If you raise 3^100, what will be the units digit of the answer?

5

What is the smallest number into which 8, 18, and 28 all divide?

18

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

1

$1 million California lottery winners are paid over 20 years. If a million dollar winner pays 28% tax, what is their net take-home each year?

11

If an 8" by 10" photo is surrounded by a 2" wide picture frame, what is the area of the picture frame?

12

If you buy 100 shares of a stock at $30, 200 shares at $20, and 300 shares at $10, then sell all at $15, did you make a profit or loss? What percent?

11

How many of the whole numbers from 1 to 100 are either divisible by 7 or include a 7 in their digits?

7

If a rocket could fly from the earth to the sun at a speed of 1,000 km per hour, about how many years would the trip take?

8

If you have 40 coins, composed only of nickels and dimes, and worth a total of $2.25, how many nickels do you have?

9

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?

12

At Gettysburg, PA, during the Civil War, President Lincoln began his speech, "Four score and seven years ago ...". Speaking of today, how many score and years has it been since the Gettysburg Address?

5

Last year a dinner cost $32 and a bottle of wine cost $18. This year the cost of the dinner increased by 5% and the cost of the wine increased by 10%. What was the percent increase in the combined cost of the dinner and wine?