Mathematics Trivia

16

There are 17 hours difference in time zones between San Francisco and Tokyo. If an airplane leaves Tokyo at 3 p.m. on Friday, and flies 10 hours to San Francisco, what day and time does it arrive in SF? (don't forget to write am or pm and the day)

16

What is the sum of the square root of 4/9 and the square root of 9/16? Express your answer as a mixed number.

13

If the sales tax on a product rises by 1/4 %, and this tax increase causes you to pay an extra $10 on a purchase, what was the original price of the item?

16

60% of the people at a party are males, and 60% of the females are there with their husbands. What percentage of the people are males who are not married to any of these women?

14

If the length, width, and height of a rectangular solid box were each increased by 50%, by what percentage would the volume be increased?

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?

13

In how many different ways can a poker player form a straight flush from a normal deck of 52 cards, no wild cards?

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

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

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?

14

Let's say a slot machine contains three independent spinning reels; each reel has 10 symbols and 3 of them are winners. What's the probability that all three reels will turn up a winner? (write answer as a percent).

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?

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?