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Brain Teaser 1

posted Oct 15, 2011, 6:49 PM by JustBenke   [ updated Oct 30, 2011, 9:10 PM ]

Ever since I was a kid I have loved "tricky questions" and brain teasers. One of my math teachers once told me that every time you solve a new type of problem you add a brand new brain tool, and each new brain tool increases your IQ. The reason is that the next time you see a similar problem, your brain goes and gets the tool it used before and solves the problem. “But remember,” he said. “You need to keep up the maintenance or your tools become rusty and dull. “
What word?
What 7-letter word becomes longer when the third letter is removed?
What has more value, one pound of $10 gold coins or a half pound of $20 gold coins?
The Train
A 100 meter long train moving 100 meter per minute must pass through a tunnel of 100 meter in length. How long will it take?
A bottle partially filled with a liquid. You only have a ruler.
How can you accurately estimate the volume of the bottle?

Brain Teasers 2

posted Oct 2, 2011, 3:50 PM by JustBenke   [ updated Oct 15, 2011, 6:59 PM ]

 Ok, number one was a good warm up. Here are some more brain teasers!
Pie question
If 1 1/2 men can eat 1 1/2 pies in 1 1/2 minutes, how many pies can 3 men eat in 30 minutes?
What word or expression does this represent?ABCDEFGHIJKLMNOPQRSTVWXYZ
The Bet
"I will bet you $1" said Ben, "that if you give me $2, I will give you $3 in return."
"Done," replied Bill.
What was the end result of the bet?   


Tricky Bottle
You have to measure exactly 4 liters of water, but you only have a 3-liter bottle and a 5-liter bottle.

How do you do it?





The Heavy Coin

You have a pile of 24 coins. Twenty-three of these coins have the same weight, and one is heavier.  Your task is to determine which coin is heavier and do so in the minimum number of weighings. You are given a beam balance (scale), which will compare the weight of any two sets of coins out of the total set of 24 coins.
How many weighings are required to identify the heavier coin?
Whats so special?
What is special about the following sequence of numbers?
8 5 4 9 1 7 6 10 3 2 0
The Race
A wealthy rancher tells his two sons to race their horses to a distant city to see who will inherit his fortune. The one whose horse is slower will win. The brothers, after wandering aimlessly for days, ask a wise man for advice. After hearing the advice they jump on the horses and race as fast as they can to the city. What did the wise man say?

If a bottle and a cork cost a dollar and a nickel, and the bottle costs a dollar more than the cork, how  much does the cork cost?


Running dog.
How far can a dog run into the forest?
What is it?
 It occurs once in a minute, twice in a week, and once in a year. What is it?

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