Riddles and Brain Teasers

I Have An Eye But Cannot See

I have an eye but cannot see.
I’m faster than any man alive and have no limbs.

What am I?

A tornado or a hurricane. The calm area in the middle of such a storm is called the eye and wind speeds can reach up to 300 mph in an extreme tornado. Neither one have any arms or legs, but that doesn’t stop them from moving, does it?

Posted in Riddles

Which Is The Odd Word Out?

Which of the following words is the odd one out?

Chocolate
Biscuit
Lemonade
Jelly
Cake

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Lemonade. It’s the only drink in the list.

Posted in Brain Teasers

Fifty Quarters

You have fifty quarters on the table in front of you. You are blindfolded and cannot discern whether a coin is heads up or tails up by feeling it. You are told that x coins are heads up, where 0 < x < 50. You are asked to separate the coins into two piles in such a way that the number of heads up coins in both piles is the same at the end. You may flip any coin over as many times as you want.

How can you do it?

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Take x coins, flip all of them and put them in one pile. The rest of the coins form the second pile.

Posted in Brain Teasers

Four Gallons From Two Buckets

You have two buckets. One holds exactly five gallons and the other three gallons. How can you measure exactly four gallons of water into the five gallon bucket?

Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.

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Fill the 3-gallon bucket.

Pour the 3 gallons of water into the 5-gallon bucket

Fill the 3-gallon bucket again.

Fill up the 5-gallon bucket with the 3-gallon bucket, leaving you with 1 gallon left in the 3-gallon bucket.

Empty out the 5-gallon bucket.

Pour the remaining 1 gallon of water from the 3-gallon bucket into the 5-gallon bucket.

Fill the 3-gallon bucket.

Pour the 3 gallons of water from the 3-gallon bucket into the 5-gallon bucket leaving you with 4 gallons of water in the 5-gallon bucket.

Alternate solution:

Fill up the 5 gallon bucket

Pour it into 3 gallon bucket, leaving 2 gallons

Empty out the 3 gallon bucket

Pour the 2 gallons in the 5 gallon bucket into the 3 gallon bucket

Fill up the 5 gallon bucket and pour it into the 3 gallon bucket until it’s full, leaving 4 gallons in the 5 gallon bucket.

Fill the 3-gallon bucket.
Pour the 3 gallons of water into the 5-gallon bucket
Fill the 3-gallon bucket again.
Fill up the 5-gallon bucket with the 3-gallon bucket, leaving you with 1 gallon left in the 3-gallon bucket.
Empty out the 5-gallon bucket.
Pour the remaining 1 gallon of water from the 3-gallon bucket into the 5-gallon bucket.
Fill the 3-gallon bucket.
Pour the 3 gallons of water from the 3-gallon bucket into the 5-gallon bucket leaving you with 4 gallons of water in the 5-gallon bucket.

Alternate solution:

Fill up the 5 gallon bucket
Pour it into 3 gallon bucket, leaving 2 gallons
Empty out the 3 gallon bucket
Pour the 2 gallons in the 5 gallon bucket into the 3 gallon bucket
Fill up the 5 gallon bucket and pour it into the 3 gallon bucket until it’s full, leaving 4 gallons in the 5 gallon bucket.

Posted in Brain Teasers