Riddles and Brain Teasers

The Ants Go Marching

Three ants are walking in the same direction. The first ant has two ants behind him, the second ant has one in front and one behind, but the third ant has one in front and one behind too. How is this possible?

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The ants are in a circle. Lets say the ants are A, B and C. A has has B and C behind him, B has A in front and C behind, and C has B in front and A behind.

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Which Do You Light First?

You have a single match and are in a pitch black room with a candle, an oil lamp and a gas stove. Which do you light first?

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The match.

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I Used to Be The Light of Your Life

I used to be the light of your life,
I’d keep you warm while I cried,
Now I’m forgotten and tossed away.

What am I?

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A candle. They used to be a primary source of light, and to a lesser extent heat. The “crying” is the wax rolling down the candle.

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Which Are True and Which Are False?

A. When a car is driven forwards the wheels rotate counter-clockwise.
B. If a clock is put forward 1 1/4 hours the minute hand moves through 450°
C. When a clock reads 4.10 the acute angle between the hands is exactly 60°

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A. False – The near-side wheels rotate counter-clockwise, but the far-side wheels rotate clockwise.
B. True
C. False – The acute angle is a little more than 60° because by the time the minute hand reaches 10, the hour hand will have moved slightly past the 4.

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A Mile Long Train

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

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Two minutes. The back of the train would be at the beginning of the tunnel after 1 minute, and would leave the end of the tunnel at the 2 minute mark.

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I Move Quickly

Physicists have built devices to make me move quickly. My last eight letters can be commonly found in newspapers, magazines, and journals.

What am I?

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Particles. Physicists use particle accelerators and newspapers, magazines and journals have articles.

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Move Your Digits

By moving one of the following digits, make the equation correct.

62 – 63 = 1

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2⁶ – 63 = 1
(2⁶ = 2x2x2x2x2x2 = 64, ∴ 64 – 63 = 1)

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Graphical Rebus Two

What does this rebus represent?

Rebus

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Castle on a Cloud

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Mixed Animals for $100

At the market you can buy a cow for $10, a pig for $1 and 8 hens for $1. How many animals would you need to buy to get 100 mixed animals for exactly $100?

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7 cows, 21 pigs and 72 hens. The trick to this is finding the combination of cows and hens with the same cost and quantity since pigs are already equal. The magic combination is 7 cows and 72 hens, giving you 79 animals that cost $79 ($70 + $9). Then you just add 21 pigs to get to 100 animals.

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Cannot Keep Until Given

You cannot keep me until you have given me. What am I?

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Your word.

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