Two men were playing tennis. They played five sets and each man won three sets.
How can this be possible?
I'm posting one puzzle, riddle, math, or statistical problem a day. Try to answer each one and post your answers in the comments section. I'll post the answer the next day. Even if you have the same answer as someone else, feel free to put up your answer, too!
Friday, June 29, 2007
Thursday, June 28, 2007
Hark, did you hear something?
How many members of each animal did Moses take on the ark?
PS, I added a poll to the sidebar. I've been wondering what type of questions/puzzles you like best. So let me know using the poll.
PS, I added a poll to the sidebar. I've been wondering what type of questions/puzzles you like best. So let me know using the poll.
Wednesday, June 27, 2007
Tuesday, June 26, 2007
Happy Fourth of July!
Do they have a fourth of July in England?
And, yes, I know it's a little early for the fourth of July...
And, yes, I know it's a little early for the fourth of July...
Monday, June 25, 2007
Crystal Challenge
If you coated a tennis ball with glue, how many other tennis balls can you attach directly to this sticky surface?
Friday, June 22, 2007
Part Two, Rebus
5)
history
history
history
6) VA DERS
7) $0 all all all all
8) DAYDAYOUT
history
history
history
6) VA DERS
7) $0 all all all all
8) DAYDAYOUT
Thursday, June 21, 2007
Where Did the Rebus Go?
1)Ignore the _, please. I needed the spacer.
F F
I
R R
E _ E
2) BA NK
3) YRAROPMET
4) IFLAND IFIFC
F F
I
R R
E _ E
2) BA NK
3) YRAROPMET
4) IFLAND IFIFC
Wednesday, June 20, 2007
Tuesday, June 19, 2007
A Closet Full of Shoes
A closet contains 10 pairs of shoes (20 shoes altogether). If 6 shoes are chosen at random, what is the probability that there will be no matching pair in the sample?
Monday, June 18, 2007
Some more sports
It's two to one, bottom of the ninth with two outs. The hometown hero stepping to the plate. The crowd tenses as the pitch is delivered.
But that's not the riddle.
No man on either side has reached second base. How can this be?
But that's not the riddle.
No man on either side has reached second base. How can this be?
Friday, June 15, 2007
For all you fans out there
Break it and it is better, immediately set and harder to break again.
What is it?
What is it?
Wednesday, June 13, 2007
Who invented the Equal Sign?
A bit of math trivia for you today. The equals sign = was invented in 1557 by Welsh mathematician Robert Recorde. In his book, The Whetstone of Witte, he wrote, "To avoid the tedious repetition of these words: is equal to; I will set a pair of parallel lines thus, =, because no two things can be more equal.
Here's your question: Perfect numbers are special because they are equal to the sum of their factors. The number 6, for instance, has factors 1, 2, and 3 which when summed equals 6. The next perfect number is 28. Do you know what the third perfect number is?
Hint: It's less than 500.
Here's your question: Perfect numbers are special because they are equal to the sum of their factors. The number 6, for instance, has factors 1, 2, and 3 which when summed equals 6. The next perfect number is 28. Do you know what the third perfect number is?
Hint: It's less than 500.
Tuesday, June 12, 2007
Monday, June 11, 2007
Pipe Dreams
I'm sure you all remember your physics and math courses, right?
Two identical tanks full of water are being drained at the same time. One of the tanks has one -two centimeter circular drain outlet and the other has two -one centimeter circular drain outlets. Will one of the tanks empty faster than the other?
Two identical tanks full of water are being drained at the same time. One of the tanks has one -two centimeter circular drain outlet and the other has two -one centimeter circular drain outlets. Will one of the tanks empty faster than the other?
Friday, June 08, 2007
Two Numbers
My first is a number, my second another,
And each, I assure you, will rhyme with the other.
My first you will find is one-fifth of my second,
And truly my whole a long period reckoned.
How many am I?
And each, I assure you, will rhyme with the other.
My first you will find is one-fifth of my second,
And truly my whole a long period reckoned.
How many am I?
Thursday, June 07, 2007
Four Wet Men
Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?
Wednesday, June 06, 2007
Crack the Glass
If boiling water is poured into a thick drinking glass as well as a very thin wine glass, of the two, which is more likely to crack? Why?
Tuesday, June 05, 2007
Word Trivia
While I expect that any one of you could answer this question, I still found it interesting enough to post. What is very unusual about the following words?
BOUGH
COUGH
DOUGH
ROUGH
THROUGH
BOUGH
COUGH
DOUGH
ROUGH
THROUGH
Monday, June 04, 2007
We Haven't Seen Any Math Questions in a While
To warm-up: Which 2-digit number is 1 more than a square and 1 less than a cube?
And a little bit harder: Can you find a three digit number which is 2 less than a cube and 2 more than a square?
Hint: the three digit number I can find is made of consecutive digits, like 567.
And a little bit harder: Can you find a three digit number which is 2 less than a cube and 2 more than a square?
Hint: the three digit number I can find is made of consecutive digits, like 567.
Friday, June 01, 2007
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