Math Riddles - Page 6

You have a cube made of 10 x 10 x 10 smaller cubes, for a total of 1000 smaller cubes. If you take off 1 layer of cubes, how many remain?
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You have two buckets: one with only white marbles and one with only black marbles. The two buckets have the same number of marbles.

How can you rearrange the marbles to maximize your chances of grabbing a white marble from each?

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If you randomly choose one of the following answers to this question, what is your chance of getting it right?

A) 50%
B) 25%
C) 0%
D) 25%
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A claustrophobic person gets on a train. The train enters a tunnel just as it is leaving the station.

Where is the best place for him to sit?
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If you toss a coin ten times and it lands heads up every time, what are the chances it will land heads up if you toss it again?
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There are two planes. One is going from New York to London at a speed of 600 MPH. The other is traveling from London to New York at a speed of 500 MPH.

When the planes meet which one will be closer to London?
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You have 7 tennis balls that are all identical but one of them is slightly lighter than the others.

Using a balance scale and only two separate weightings, how can you find the light tennis ball?
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The marathon man timed himself and found out that if he wore a bright white outfit he ran 20 miles in 80 minutes but when he wore a dark outfit he ran 20 miles in one hour and twenty minutes. What does this mean for his next race?
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Two planes take off at the same exact moment. They are flying across the Atlantic. One leaves New York and is flying to Paris at 500 miles per hour. The other leaves Paris and is flying to New York at just 450 miles per hour.Which one will be closer to Paris when they meet?
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A worm is in a ten foot hole. Every day he goes up two feet and drops down one. How many days will it take for the worm to get out of the hole?
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Which is correct: ‘9 and 6 is 14’ or ‘9 and 6 are 14’?
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Jenna wrote all the numbers from 300 to 400 on a piece of paper. How many times did she write the digit 3?
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There are four girls and four apples in a basket. Every girl takes an apple yet one apple remains in the basket? How is this possible?
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A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?
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If you go to the movies and you”re paying is it cheaper to take one friend to the movies twice or two friends to the movies at the same time?”
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If a wheel has 64 spokes how many spaces are there between the spokes?
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What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
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Solve this mathematical problem: 2 + 15 + 5 + 9 – 4 + 3 + 8 – 12 + 26.
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A clock chimes 5 times in 4 seconds. How many times will it chime in 10 seconds?
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Farmer Brown came to town with some watermelons. He sold half of them plus half a melon and found that he had one whole melon left. How many melons did he take to town?
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