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Brainteaser for February 28, 2010

Question:
Insert any of these mathematical signs + – X / and () between any of teh numbers on the left side of the equation to make the equation true. You can join numbers on the left together without a sign between them to make a two or 3 digit number.

4 8 5 7 = 333

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Brainteaser for February 27, 2010

Question:
The story goes that the harem of the Great Tamerlan was protected by a door with many locks.
His visier and four slaves were in charge of guarding the door.
Knowing well the weakness of men the Great Tamerlan distributed the keys in such a way the vizier could only opeen the door if he was with any one of the slaves and the slaves could only open the door if the three of them worked together.

How many locks did the door have?

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Brainteaser for February 26, 2010

Question:
What are the next 2 numbers in the series?

5 8 26 48 122 ??? ???

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Brainteaser for February 25, 2010

Question:
Guess the Number:

1. The number is greater than 6 x 9.
2. The number is less than 8 x 9.
3. The tens digit is smaller than the units digit.
4. The units digit is odd.
5. The difference of the digits is 4.

What is the number?

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Brainteaser for February 24, 2010

Question:
What is the five-digit number with no zeros and no repeated numbers in which the second digit is two times the first the third is three times the second the fourth is four times the first and the last is one-half more than the second.

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Brainteaser for February 23, 2010

Question:
” I once met a strange young man named Bob. What was strange about Bob was that he always lied on Monday’s but told teh truth the other six days of the week. One day he told me “”Either today is Monday or I am married”". I told you he was strange but can you tel l me if it was really Monday and if he was married or not? “

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Brainteaser for February 22, 2010

Question:
All the vowels A E I O U but not Y have been removed from the following proverb. The remaining letters have been kept in their proper order but put in groups of three letters each.

What is the well known proverb?

BRD SFF THR FLC KTG THR

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Brainteaser for February 21, 2010

Question:
Math Chain:

What is the answer at the end of the chain?

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Brainteaser for February 20, 2010

Question:
Consider two cans, the first containing one liter of milk, the second containing one liter of water. Suppose you take one cup of milk out of the first can and pour it into the second can. After mixing you take one cup of the mixture from the second can and pour it back into the first can.

Is there more milk in the water container than there is water in the milk container?

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Brainteaser for February 19, 2010

Question:
Melissa and David were racing. David beat Melissa by 10 Metres in a 100 Metre race. Melissa suggested that they race again but this time David Start 10 Metres behind her and the original starting line.

Who won?

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