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Brainteaser for March 10, 2010

Question:
Two small armies of ants meet head-on along a jungle path. Both armies would prefer to pass each other rather than fight. There is a small space to the side in the middle of the path.It is only large enough to hold one ant at a time, and the path is only large enough to move single file.

Is it possible for the armies to pass each other? If so, how?

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Brainteaser for March 9, 2010

Question:
Are 1997 nickels worth more than 1992 nickels?

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Brainteaser for March 8, 2010

Question:
Guess the Number:

1. The number is greater than the number of days in November.
2. The number is less than the number of inches in 10 feet.
3. The number is an even number.
4. If you count by 10’s, you say the number.
5. The sum of the digits is equal to the number of days in a week.

What is the number?

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Brainteaser for March 7, 2010

Question:
The following letters of the alphabet have been divided into three groups. What property or attribute has decided each grouping?

CEFGHIJKLMNSTUVWXYZ

ADOPQR

B

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Brainteaser for March 6, 2010

Question:
The same four letter word can be added to each of the following words to make a new word or a common phrase.
PROOF TREE LESS BIRD

What is the word?

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Brainteaser for March 5, 2010

Question:
I know a word of letters three
Add two and fewer there will be.

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Brainteaser for March 4, 2010

Question:
The children like to help out stuffing envelopes when we do large mailings, but they don’t all work at the same speed. Robert and David can do a certain number of envelopes in 10 hours. For the same number of envelopes it takes David and Bailey 15 hours. Robert and Bailey together take 30 hours for the same task.

How many hours would it take each of them if they were to stuff the envelopes on their own?

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Brainteaser for March 3, 2010

Question:
Math Chain:

What is the answer at the end of the chain?

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Brainteaser for March 2, 2010

Question:
At summer camp each cabin must do a different chore.
There are six cabins and six related chores. From the clues below can you figure out which cabin did what chore?

1. Cabin 3 wants to clean the pool or wash the showers.
2. Cabin 4 does not want to set the tables or sweep cabins.
3. Cabin 1 likes sweeping cabins or tidying the art room.
4. The horses will only allow cabin 5 or cabin 6 to groom them.
5. Cabin 5 wants to wash the showers in order to have a water fight.
6. Cabin 2 wants to set tables.

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Brainteaser for March 1, 2010

Question:
Five people want to share a square pizza. The first person, who is really hungry, removes a quarter of the pie. The others try and divide the remaining 3/4 into 4 equal and identically shaped slices. The cuts must be straight.

How must they cut the remaining pizza in order to produce four identical slices?

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