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Riddle:

How can you measure nine minutes with have two hourglasses, one four minute and one seven minute?

Answer:

Turn over both hourglasses at once. When the four-minute hourglass runs out, turn it over. When the seven-minute hourglass runs out, turn it over. When the four-minute timer runs out this time (eight minutes have elapsed), the seven-minute hourglass has been running for one minute. Now turn over the seven minute timer back over. When the timer runs out, nine minutes have elapsed.

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Riddle:

Eight years ago, Bill was eight times the age of his son Bill Jr. Today, if you add their ages together, they add up to 52. How old are Bill and his son?

Answer:

Bill is 40, and Bill Jr. is 12.

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Riddle:

Place three matches on a table. Tell a friend to add two more matches to make eight.

Answer:

Add two matches to make a roman numeral eight.

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Riddle:

A 300 ft. train is traveling 300 ft. per minute must travel through a 300 ft. long tunnel.  How long will it take the train to travel through the tunnel?

Answer:

Two minutes. It takes the front of the train one minute and the rest of the train will take two minutes to clear the tunnel.

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Riddle:

Tom volunteered to be the chief organizer for the world's tether ball championships. There were 657 contestants from around the world. The tournament was set up whereby the winner would advance and the loser would be eliminated. Since there was an odd number of participants, the initial pairing leaves one player out. That player gets a bye and automatically advances to the next round. How many matches will Tom have to schedule to determine the tether ball champion?

Answer:

656 matches will be needed.

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Riddle:

If two's company and three's a crowd, what are four and five?

Answer:

Four and five is nine.

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Riddle:

A certain number has three digits. The sum of the three digits equals 36 times this number. Seven times the left digit plus 9 is equal to 5 times the sum of the two other digits. 8 times the second digit minus 9 is equal to the sum of the first and third.

What is the number?

Answer:

This one is fairly easy - 324 is the answer.

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Riddle:

David is throwing Robert a surprise birthday party but he has to stay within his budget. He spent half of his money plus $2.00 on the cake. Half of what he had left plus $2.00 was spent on balloons and streamers. Then he spent half of what he had left plus $1.00 on candy. Now he is out of money, how much did he start with?

Answer:

This one is best solved working backwards, the last part David spent half of what was left plus $1.00 on candy and then was out of money. That means he must have spent $2.00 on Candy as $1.00 was half of what he had using the same logic backwards: $2.00 on candy $6.00 on Balloons and Streamers $12.00 on the cake Total of $20.00.

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Riddle:

Why are 1999 ten pound notes worth more than 1993 ten pound notes?

Answer:

Because there are more of them!

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Riddle:

A frog fell into a well 12 feet deep. He could jump 3 feet, but every time he jumped 3 feet, he fell back 2 feet. How many times did he have to jump to get out of the well?

Answer:

The tenth jump took him out. (On the tenth jump he reached 13 feet and was out.)

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