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, March 31, 2006
A wedding feast
At the Miller's wedding, it was determined that 90% of the guests had chicken, 80% had peas, 70% had vanilla cake, and 60% had ice cream. No one, however, had all four items. What percentage of the guests had at least one of the two deserts?
Thursday, March 30, 2006
Tie color
There are 3 gentlemen in a meeting: Mr. Yellow, Mr. Green and Mr. Brown. They are wearing yellow, green and brown ties. Mr. Yellow says: "Did you notice that the color of our ties are different from our names?" The person who is wearing the green tie says, "Yes, you are right!"
Do you know who is wearing what color of tie?
Do you know who is wearing what color of tie?
Wednesday, March 29, 2006
Are you guilty?
There was a robbery in which a lot of goods were stolen. The robber(s) left in a truck. It is known that : (1) No one other than A, B and C was involved in the robbery. (2) C never commits a crime without inviting A to be his accomplice. (3) B does not know how to drive. So, is A innocent or guilty?
Tuesday, March 28, 2006
Monday, March 27, 2006
Sunday, March 26, 2006
Saturday, March 25, 2006
Friday, March 24, 2006
I'm not feeling well today, so...
Today you get a medical: joke/riddle
What sickness do cowboys get from riding wild horses?
What sickness do cowboys get from riding wild horses?
Thursday, March 23, 2006
Smallest Integer
What is the smallest positive integer that leaves a remainder of 1 when divided by 2, remainder of 2 when divided by 3, a remainder of 3 when divided by 4, … and a remainder of 9 when divided by 10?
Wednesday, March 22, 2006
Sing a song of six pence
Every Friday night is open mike night at Gabriel’s Tavern. Gabriel had started it many years ago to give his Friday night business a boost and it had grown to become a very successful and respected event. Bands, comedians, singers, the event drew talented people from all areas of entertainment, hoping to make a name for themselves. Talent scouts from the city had even started attending the event because of the quality of entertainers that Gabriel’s open mike night attracted. His walls were full of autographed pictures of now-big time entertainers that had once been regulars to Open Mike Night. This Friday was no exception to the outstanding talent that Gabriel’s Tavern hosted. In total, he had five bands take advantage of his open mike this week, all of them well received by the tavern’s patrons. Determine the name of each band, the full name of each band’s lead singer, and the number of members in each band.
1. The two bands with three members were Bountiful Glory and the band with Steve as a lead singer.
2. Tin Cup had a male lead singer, but it wasn’t Michael Fisk. Swarez wasn’t the lead singer for Envy.
3. The two bands with four members were the band that had Mr. Barnet as lead singer and the band with Rachel as lead singer.
4. The Howling Dogs didn’t have Wanda Marsh as a lead singer. Larry didn’t sing with Envy.
5. The band with five members was End Zone.
6. Mr. Lariet didn’t sing for Tin Cup. Michael didn’t sing for Bountiful Glory.
1. The two bands with three members were Bountiful Glory and the band with Steve as a lead singer.
2. Tin Cup had a male lead singer, but it wasn’t Michael Fisk. Swarez wasn’t the lead singer for Envy.
3. The two bands with four members were the band that had Mr. Barnet as lead singer and the band with Rachel as lead singer.
4. The Howling Dogs didn’t have Wanda Marsh as a lead singer. Larry didn’t sing with Envy.
5. The band with five members was End Zone.
6. Mr. Lariet didn’t sing for Tin Cup. Michael didn’t sing for Bountiful Glory.
Tuesday, March 21, 2006
Looking for some Vitamin C?
Greengrocer C. Carrot wants to expose his oranges neatly for sale. Doing this he discovers that one orange is left over when he places them in groups of three. The same happens if he tries to place them in groups of 5, 7, or 9 oranges. Only when he makes groups of 11 oranges, it fits exactly.
The Question: How many oranges does the greengrocer have at least?
The Question: How many oranges does the greengrocer have at least?
Monday, March 20, 2006
Reading time!
Two friends, Alex and Bob, go to a bookshop, together with their sons Peter and Tim. All four of them buy some books; each book costs a whole amount in dollars. When they leave the bookshop, they notice that both fathers have spent 21 dollars more than their respective sons. Moreover, each of them paid per book the same amount of dollars as books that he bought. The difference between the number of books of Alex and Peter is five.
Who is the father of Tim?
Who is the father of Tim?
Sunday, March 19, 2006
What am I?
I turn around once.
What is out will not get in.
I turn around again.
What is in will not get out.
what am I?
What is out will not get in.
I turn around again.
What is in will not get out.
what am I?
Saturday, March 18, 2006
Five 5's
Can you make 5 5's into 37?
5 5 5 5 5 = 37.
What I'm looking for is something like this: 5+5*5-5/5=29, but the answer should be 37. Can you do it?
5 5 5 5 5 = 37.
What I'm looking for is something like this: 5+5*5-5/5=29, but the answer should be 37. Can you do it?
Friday, March 17, 2006
Multiply by four
Bert and Ernie take turns multiplying numbers. First Bert chooses the number 4. Ernie multiplies it by 4 to get 16. Bert multiplies that by 4 to get 64. Ernie multiplies that by 4 to get 256.
After going back and forth several times, one of them comes up with the number 1,048,576. Who came up with that number, Bert or Ernie?
And no, you don't need a calculator for this one.
After going back and forth several times, one of them comes up with the number 1,048,576. Who came up with that number, Bert or Ernie?
And no, you don't need a calculator for this one.
Thursday, March 16, 2006
Why is Deal or No Deal right?
One of the first posts I did here was on the Monty Hall problem. In short: you are presented with three doors (1,2,3) and are told there is a prize behind one of them. You select door one (at random). The host reveals that behind door number 2 (2 being one of the doors you didn't select) there is no prize. At this point, your best strategy is to switch to the third door since there is a 2 in 3 chance of the prize being behind door number three.
So, my question today is, why doesn't Deal or No Deal fall into this trap? When there are only two suitcases left to be opened, plus the one the contestant chose: why can the execs at NBC say there is a 1 in 3 chance of the highest prize being in the suitcase the contestant chose at the beginning?
Or am I wrong and they are lying to the viewers?
In case you aren't familiar with the game, you can play it online at addicting games.
So, my question today is, why doesn't Deal or No Deal fall into this trap? When there are only two suitcases left to be opened, plus the one the contestant chose: why can the execs at NBC say there is a 1 in 3 chance of the highest prize being in the suitcase the contestant chose at the beginning?
Or am I wrong and they are lying to the viewers?
In case you aren't familiar with the game, you can play it online at addicting games.
Wednesday, March 15, 2006
Race to the finish
Four top athletes competed in two qualifying 400 metre races. The results were mislaid, but various notes were taken:
No-one finished both races in the same position. John beat Mr Donald in both races. Steve Curtail came third in the second race and Dave came last in the first race. In the second race, Mr Arnold won and Mr Bowler came last. In the first race, Steve beat Kev, but Kev beat John.
Can you determine who finished where in each of the races?
No-one finished both races in the same position. John beat Mr Donald in both races. Steve Curtail came third in the second race and Dave came last in the first race. In the second race, Mr Arnold won and Mr Bowler came last. In the first race, Steve beat Kev, but Kev beat John.
Can you determine who finished where in each of the races?
Tuesday, March 14, 2006
Trivia in parts
My last 3 can be a type of sauce. My first 3 can be soft material that can protect you. I am a type of fabric, or an article of clothing made from this fabric. What am I?
Monday, March 13, 2006
Sunday, March 12, 2006
Let's go for a ride on a train
On a train, Smith, Robinson, and Jones are the fireman, brakeman, and the engineer, but NOT respectively. Also aboard the train are three businessmen who have the same names: a Mr. Smith, a Mr. Robinson, and a Mr. Jones.
1. Mr. Robinson Lives in Detroit.
2. The brakeman lives exactly halfway between Chicago and Detroit
3. Mr. Jones earns exactly $20,000 per year.
4. The brakeman's nearest neighbor, one of the passengers, earns exactly three times as much as the brakeman.
5. Smith beats the fireman in billiards.
6. The passenger whose name is the same as the brakeman's lives in Chicago.
Who is the Engineer?
1. Mr. Robinson Lives in Detroit.
2. The brakeman lives exactly halfway between Chicago and Detroit
3. Mr. Jones earns exactly $20,000 per year.
4. The brakeman's nearest neighbor, one of the passengers, earns exactly three times as much as the brakeman.
5. Smith beats the fireman in billiards.
6. The passenger whose name is the same as the brakeman's lives in Chicago.
Who is the Engineer?
Friday, March 10, 2006
Feeding time
Zookeeper George was in charge of feeding all of the animals in the morning. He had a regular schedule that he followed every day. Can you figure it out from the clues?
1) The giraffes were fed before the zebras but after the monkeys.
2) The bears were fed 15 minutes after the monkeys.
3) The lions were fed after the zebras.
The feeding times were 6:30, 6:45, 7:00, 7:15, and 7:30 AM. And he can only feed one animal at each time.
1) The giraffes were fed before the zebras but after the monkeys.
2) The bears were fed 15 minutes after the monkeys.
3) The lions were fed after the zebras.
The feeding times were 6:30, 6:45, 7:00, 7:15, and 7:30 AM. And he can only feed one animal at each time.
Thursday, March 09, 2006
Pen Pyramid
_ P E N
P E N _ _
_ _ P E N _
_ _ _ P E N _
_ _ _ P E N _ _
_ _ P E N _ _ _ _
_ _ P E N _ _ _ _ _
Hints:
1) Candid
2) Lincoln's on this
3) Regret
4) Hang
5) Asps and Vipers
6) Costly
7) European Capital
Wednesday, March 08, 2006
First class
Define the letter class of a whole number as the number of letters in that number. For example, the letter class of 16 (Sixteen) is 7, while the letter class of 7 (seven) is 5 and the letter class of 300 (three hundred) is 12. There is only one number between 1 and 5,000 that is theonly representative of it's class. Care to find it?
I'll put a hint in the comments section.
I'll put a hint in the comments section.
Tuesday, March 07, 2006
Gossip heard round the world
There are six busybodies in town who like to share information. Whenever one of them calls another, by the end of the call they both know evertything that the other one knew beforehand. One day, each of the six picks up a juicy piece of gossip. What is the minimum number of phone calss required before all six of them know all six of these tidbits?
Monday, March 06, 2006
Is it worth the 25 cent toy?
Let's say there is a cereal that is putting out four different toys in their cereal box. Assuming the prizes are placed randomly and are evenly distributed, how many boxes of cereal would you need to buy on average (or, if you like, you should expect to buy how many boxes) before you got all four?
Sunday, March 05, 2006
Before or behind?
Len always has it before. Paul has it behind. Bryan has never had it at all. Girls can have it only once. Boys don't need it. Mrs. Mulligan, the widow, has it twice in succession. Dr. Lowell of Harvard has it twice as bad at the end as at the beginning. Do you know what it is?
Friday, March 03, 2006
Thursday, March 02, 2006
Save yourself
A prisoner is told "If you tell a lie we will hang you; if you tell the truth we will shoot you."
What can he say to save himself? Note that he must say something to save himself.
What can he say to save himself? Note that he must say something to save himself.
Wednesday, March 01, 2006
P, J and B were hanging out together...
B, J and P are related to each other.
1. Among the three are B's legal spouse, J's sibling and P's sister-in-law.
2. B's legal spouse and J's sibling are of the same sex.
Who is the married man?
1. Among the three are B's legal spouse, J's sibling and P's sister-in-law.
2. B's legal spouse and J's sibling are of the same sex.
Who is the married man?
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