- What walks all day on its head?
- What gets wet when drying?
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, February 26, 2010
Two More Riddles to End the Week
Thursday, February 25, 2010
Speaks Without a Mouth
Lives without a body, hears without ears, speaks without a mouth, to which the air alone gives birth.
Wednesday, February 24, 2010
Not Sure I Get It
When one does not know what it is, then it is something; but when one knows what it is, then it is nothing.
Tuesday, February 23, 2010
Round and Round the Wood
What goes round and round the wood but never goes into the wood?
Monday, February 22, 2010
In Celebration of the Gold Medals
The sun bakes them, the hand breaks them, the foot treads on them, and the mouth tastes them. What are they?
Friday, February 19, 2010
52 Card Pickup
A standard pack of cards is thrown into the air in such a way that each card, independently, is equally likely to land face up or face down. The total value of the cards which landed face up is then calculated. (Card values are assigned as follows: Ace=1, 2=2, ... , 10=10, Jack=11, Queen=12, King=13. There are no jokers.)
What is the probability that the total value is divisible by 13?
What is the probability that the total value is divisible by 13?
Thursday, February 18, 2010
Buffalo buffalo
What's so special about the following sentence?
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo."
"Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo."
Wednesday, February 17, 2010
Not Made By Man
Neither the sun or the moon or the stars,
not made by man,
yet lights up the fields.
What am I?
not made by man,
yet lights up the fields.
What am I?
Tuesday, February 16, 2010
Nothing Like a Little Vacation Week
What is it that we all search for,
yet, when we find it,
we are not aware of it?
yet, when we find it,
we are not aware of it?
Thursday, February 11, 2010
Not Exactly Rubiks Cube
Twenty-seven identical white cubes are assembled into a single cube, the outside of which is painted black. The cube is then disassembled and the smaller cubes thoroughly shuffled in a bag. A blindfolded man (who cannot feel the paint) reassembles the pieces into a cube. What is the probability that the outside of this cube is completely black?
Wednesday, February 10, 2010
Snowing in Centimeters
It snowed yesterday in New York, Winnipeg, Boston, and Toronto. Each city had a different amount of snow accumulation. Figure out how much it snowed in each city.
Assume 1 inch = 2.54 centimeters.
(numbers in clues are rounded to the nearest hundredth)
Assume 1 inch = 2.54 centimeters.
(numbers in clues are rounded to the nearest hundredth)
- Boston and Winnipeg had a total accumulation of thirty-six and thirty-two hundredths centimeters.
- New York and Winnipeg had a total accumulation of thirty-three and seventy-eight hundredths centimeters.
- Winnipeg had two times more snow than Toronto.
- New York and Toronto had a total accumulation of ten and fifteen hundredths inches.
Tuesday, February 09, 2010
Check, Please
A confused bank teller transposed the dollars and cents when he cashed a check for Ms Smith, giving her dollars instead of cents and cents instead of dollars. After buying a newspaper for 50 cents, Ms Smith noticed that she had left exactly three times as much as the original check. What was the amount of the check?
Monday, February 08, 2010
Urn is Such a Funny Word
An urn contains a number of colored balls, with equal numbers of each color. Adding 20 balls of a new color to the urn would not change the probability of drawing (without replacement) two balls of the same color.
How many balls are in the urn? (Before the extra balls are added.)
How many balls are in the urn? (Before the extra balls are added.)
Friday, February 05, 2010
Friday Morning and I Need a Joke
If an airplane crashed exactly on the border of France and Germany, where would the survivors be buried?
Thursday, February 04, 2010
Can You Hear the Call
Which of these do not belong?
- puffin
- siskin
- calabash
- mallard
- merlin
- goshawk
Wednesday, February 03, 2010
Canoe Logic
Four adventurers (Alex, Brook, Chris and Dusty) need to cross a river in a small canoe.
The canoe can only carry 100kg.
Alex weighs 90kg, Brook weighs 80kg, Chris weighs 60kg and Dusty weighs 40 kg, and they have 20kg of supplies.
How do they get across?
The canoe can only carry 100kg.
Alex weighs 90kg, Brook weighs 80kg, Chris weighs 60kg and Dusty weighs 40 kg, and they have 20kg of supplies.
How do they get across?
Tuesday, February 02, 2010
How Did You Know There Were Fifty Coins?
Mary had a coin purse with fifty coins, totaling exactly $1.00. Unfortunately, while counting her change, she dropped one coin. What is the probability that it was a penny?
Monday, February 01, 2010
From 18 to 29
Seems like a good day to equate things:
18 = H on a G C.
20 = F O in a P.
20 = H in a T.
21 = G S.
21 = D on a D.
23 = P of C in H.
24 = H in a D.
24 = C in P G.
26 = L of the A.
27 = B in the N T.
29 = D in F in a L Y.
18 = H on a G C.
20 = F O in a P.
20 = H in a T.
21 = G S.
21 = D on a D.
23 = P of C in H.
24 = H in a D.
24 = C in P G.
26 = L of the A.
27 = B in the N T.
29 = D in F in a L Y.
Subscribe to:
Posts (Atom)