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Brain Twisters...


jodi_ice
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It's a dreary monday...so i thought i'd get your brains working if you want :)

 

here are some Logic puzzles :)

 

feel free to solve them and put your answers here :)

 

2 boys on bicycles, 20 miles apart, began racing toward each other. The instant they started, a fly on the handle bar of one of the bikes started flying toward the other bike's handle bar. As soon as it reached, it turned around and went to the other bike and so on until the bikes met. If each bike had a constant speed of 10 mph, and the fly was traveling 15 mph constantly, how far did the fly travel?

 

 

Eight years ago, Mary was half as old as Jane will be when Jane is one year older than Tim will be at the time when Mary will be five times as old as Tim will be two years from now.

Ten years from now Tim will be twice as old as Jane was when Mary was nine times as old as Tim.

When Tim was one year old, Mary was three years older than Tim will be when Jane is three times as old as Mary was six years before the time when Jane was half as old as Tim will be when Mary will be ten years older than Mary was when Jane was one-third as old as Tim will be when Mary will be three times as old as she was when Jane was born.

How Old Are They Now?

 

 

1 train leaves from NYC heading towards LA at 100 mph. three hours later, a train leaves from LA heading towards NYC at 200 MPH. Assume there's exactly 2000 miles between LA and NYC. When they meet, which train is closer to NYC?

 

 

You are given 10 baskets. 9 of the baskets each have 10 balls weighing 10kg per ball, however one basket has 10 balls weiging 9kg each. All the balls and baskets are identical in appearance. You are asked to determine which basket contains the 9kg balls. You have a suitable scale, but may only take a single measurement. No other measurements may be taken (like trying to determine by hand). You may remove balls from the baskets but may still only take one measurement.

How do you do it?

 

 

An Arab sheikh tells his two sons to race their camels to a distant city to see who will inherit his fortune. The one whose camel is slower will win. The brothers, after wandering aimlessly for days, ask a wise man for advise. After hearing the advice they jump on the camels and race as fast as they can to the city. What does the wise man say?

 

 

 

Ok, imagine a large empty bin. Each minute people would come and put in one golf ball a piece. The first minute(Starting at 12 noon), 1 person came and put in a ball. The second minute, 2 people put in one ball a piece. A minute later, 4 people put in 1 ball a piece. This pattern continued until the bin was exactly full at 6 pm. At what time was the bin half empty?

 

 

 

You have two hourglasses--a 4-minute glass and a 7-minute glass. You want to measure 9 minutes.

How do you do it?

 

 

 

Three people check into a hotel. They pay $30 to the manager and go to their room. The manager finds out that the room rate is $25 and gives $5 to the bellboy to return. On the way to the room the bellboy reasons that $5 would be difficult to share among three people so he pockets $2 and gives $1 to each person.

Now each person paid $10 and got back $1. So they paid $9 each, totalling $27. The bellboy has $2, totalling $29.

Where is the remaining dollar?

 

 

 

You buy a ten-gallon hat as a souvenir of a visit to Texas; only when you got home did you discover that the label states it to be only a six-gallon hat. By now, you were skeptical that it was even that big, and you decided to test it by trying to fill it with 6 gallon of water. The only containers you had on hand are a 9-gallon and a 4-gallon container. Using them, how were you able to pour 6 gallon into the hat?

 

 

 

Two boxes are labeled "A" and "B". A sign on box A says "The sign on box B is true and the gold is in box A". A sign on box B says "The sign on box A is false and the gold is in box A". Assuming there is gold in one of the boxes, which box contains the gold?

 

 

 

get cracking!!!

 

oh.. and remember to quote any you're solving when you reply :wink2:

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Quote:

You are given 10 baskets. 9 of the baskets each have 10 balls weighing 10kg per ball, however one basket has 10 balls weiging 9kg each. All the balls and baskets are identical in appearance. You are asked to determine which basket contains the 9kg balls. You have a suitable scale, but may only take a single measurement. No other measurements may be taken (like trying to determine by hand). You may remove balls from the baskets but may still only take one measurement.

How do you do it?

Count them....? Does this count as a measurement? If so, ignore this....

 

These are frustrating, but I've heard one or two of them before, so i'll have to start thinking...

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