Brain Strain

Brain StrainBrain Strain

Time to Think!Time to Think!

Puzzle 1Puzzle 1

•Always old, sometimes new, Always old, sometimes new, Never sad, sometimes blue, Never sad, sometimes blue, Never empty, sometimes full, Never empty, sometimes full, Never pushes, always pulls. Never pushes, always pulls.

What is it?What is it?

Puzzle 2Puzzle 2

•What are the next two What are the next two numbers in the series? numbers in the series?

14, 316, 536, 764, ?, ?14, 316, 536, 764, ?, ?

Puzzle 3Puzzle 3

•Dies half its life Dies half its life Lives the rest Lives the rest Dances without music Dances without music Breathes without breath Breathes without breath

What is it?What is it?

Puzzle 4Puzzle 4• A man is walking along a level road A man is walking along a level road

lit only by a single streetlight. He is lit only by a single streetlight. He is moving in a straight line, at a moving in a straight line, at a constant speed. constant speed.

He passes the lamppost and leaves He passes the lamppost and leaves it behind, which makes his shadow it behind, which makes his shadow lengthen. lengthen.

Does the top of the man's shadow Does the top of the man's shadow move faster, slower or at the same move faster, slower or at the same speed as the man? Justify your speed as the man? Justify your answeranswer

Puzzle 5Puzzle 5

•A number when multiplied A number when multiplied with 33/4 gives the same with 33/4 gives the same answer when it is added to answer when it is added to 33/4. 33/4.

What is that number?What is that number?

Puzzle 6Puzzle 6

•If two numbers are If two numbers are respectively 20% and 50% of respectively 20% and 50% of a third number, what % is the a third number, what % is the first number of the second first number of the second number?number?

Puzzle 7Puzzle 7

•A bus driver was going down a A bus driver was going down a street. He was on the wrong side. He street. He was on the wrong side. He wentwent

through a stop sign and didn't signal through a stop sign and didn't signal at a turn. He went under the at a turn. He went under the minimum speed and yet he didn't minimum speed and yet he didn't get in trouble for his actions. get in trouble for his actions.

WHY not?WHY not?

Puzzle 8Puzzle 8• For many years a BIG company was looking for For many years a BIG company was looking for

the universal solvent - a solvent that will dissolve the universal solvent - a solvent that will dissolve anything. anything.

One day a man walked in with a bottle in his One day a man walked in with a bottle in his hand. The man said "I've come up with the hand. The man said "I've come up with the UNIVERSAL solvent!! And if you're lucky, i will UNIVERSAL solvent!! And if you're lucky, i will sell it to you for a mere $100,000!" sell it to you for a mere $100,000!"

The president looked seriously at the man and The president looked seriously at the man and screamed, "Get out of here you stupid creep! screamed, "Get out of here you stupid creep! You're a dumb liar and a fake!!!" You're a dumb liar and a fake!!!"

And with that the president of this huge company And with that the president of this huge company picked up the guy and threw him out by his feet. picked up the guy and threw him out by his feet.

How did the president know the man was a fake How did the president know the man was a fake before he even tested the solvent?before he even tested the solvent?

Puzzle 9Puzzle 9

• Ben can never tell a lie, George can Ben can never tell a lie, George can never tell the truth. never tell the truth.

One of them said, "The other one One of them said, "The other one said he was George". said he was George".

Who said that?Who said that?

Puzzle 10Puzzle 10

• There are three bulbs on 19th floor and there There are three bulbs on 19th floor and there are three switches X, Y and Z on the ground are three switches X, Y and Z on the ground floor. Each switch belongs to one bulbs, not floor. Each switch belongs to one bulbs, not necessarily in order. You can switch on or off necessarily in order. You can switch on or off as many times you want but you can go on as many times you want but you can go on 19th floor only once. 19th floor only once.

How will you find out which switch belongs to How will you find out which switch belongs to which bulb? Note that you are the only person which bulb? Note that you are the only person over there. You can't go outside and can't use over there. You can't go outside and can't use any tools.any tools.

Puzzle 11Puzzle 11

• Given a rectangular cake with a Given a rectangular cake with a rectangular piece removed (any Size rectangular piece removed (any Size or Orientation). or Orientation).

How would you cut the remainder of How would you cut the remainder of the cake into two equal halves with the cake into two equal halves with one straight cut of a knife? one straight cut of a knife?

Puzzle 12Puzzle 12• On one side of the river there is a man, a On one side of the river there is a man, a

wolf, a goat, and some cabbage. The man wolf, a goat, and some cabbage. The man needs to take each of them across to the needs to take each of them across to the other side of the river. He has a boat, but in other side of the river. He has a boat, but in it he can only fit one of them as well as it he can only fit one of them as well as himself. himself.

If he takes the wolf across first, the goat will If he takes the wolf across first, the goat will eat the cabbage. If he takes the cabbage eat the cabbage. If he takes the cabbage across, the wolf will eat the goat. across, the wolf will eat the goat.

Write the correct order in which he can take Write the correct order in which he can take them across them across

Puzzle 13Puzzle 13

• A man was looking at a portrait. Someone A man was looking at a portrait. Someone asked him, "Whose picture are you looking asked him, "Whose picture are you looking at?" at?"

He replied, pointing at the portrait: He replied, pointing at the portrait: "Brothers and sisters have I none, but this "Brothers and sisters have I none, but this man's son is my father's son." man's son is my father's son."

Now whose picture is the man looking at? Now whose picture is the man looking at?

Puzzle 14Puzzle 14

• Sita says to Gita, "I have 3 sons. They Sita says to Gita, "I have 3 sons. They are all less than 10 years in age and all are all less than 10 years in age and all are of different age. The product of the are of different age. The product of the ages of the two younger brothers is ages of the two younger brothers is equal to the age of the eldest brother. equal to the age of the eldest brother. Also, the sum of their ages is a Prime Also, the sum of their ages is a Prime number." number."

How old is the eldest son? How old is the eldest son?

Puzzle 15Puzzle 15

• Do you know the missing number in Do you know the missing number in the given series? the given series?

10, 11, 12, 13, 14, 15, 16, 17, 20, 22, 10, 11, 12, 13, 14, 15, 16, 17, 20, 22, 24, ___ , 100, 121, 10000 24, ___ , 100, 121, 10000

Puzzle 16Puzzle 16

• Decipher the following: Decipher the following:

YYRUYYUBICURYY4MEYYRUYYUBICURYY4ME

Puzzle 17Puzzle 17

• Let's say that you were a bus driver. At the Let's say that you were a bus driver. At the 1st stop 10 people got on the bus, 2nd stop 1st stop 10 people got on the bus, 2nd stop 3 people got on the bus and 2 got off, 3rd 3 people got on the bus and 2 got off, 3rd stop 23 people got on and 9 got off, 4th stop stop 23 people got on and 9 got off, 4th stop 53 people got on, 5th stop 30 people got off 53 people got on, 5th stop 30 people got off another 2 people got off and then got back another 2 people got off and then got back on, and 4 got on at this bus stop. Now at the on, and 4 got on at this bus stop. Now at the last stop before the bus came to its final last stop before the bus came to its final destination 29 people got on and 23 people destination 29 people got on and 23 people got off. got off.

What was the bus drivers name?What was the bus drivers name?

Puzzle 18Puzzle 18

• Why can't a man in California marry Why can't a man in California marry his widow's sister?his widow's sister?

Puzzle 19Puzzle 19

• There are 3 persons X, Y and Z. On some There are 3 persons X, Y and Z. On some day, X lent tractors to Y and Z as many as day, X lent tractors to Y and Z as many as they had. After a month Y gave as many they had. After a month Y gave as many tractors to X and Z as many as they have. tractors to X and Z as many as they have. After a month Z did the same thing. At the After a month Z did the same thing. At the end of this transaction each one of them end of this transaction each one of them had 24. had 24.

Find the tractors each originally had? Find the tractors each originally had?

Puzzle 20Puzzle 20• A rich man died. In his will, he has divided A rich man died. In his will, he has divided

his gold coins among his 5 sons, 5 his gold coins among his 5 sons, 5 daughters and a manager. daughters and a manager.

• According to his will: First give one coin According to his will: First give one coin to manager. 1/5th of the remaining to the to manager. 1/5th of the remaining to the elder son. Now give one coin to the elder son. Now give one coin to the manager and 1/5th of the remaining to manager and 1/5th of the remaining to second son and so on..... After giving second son and so on..... After giving coins to 5th son, divided the remaining coins to 5th son, divided the remaining coins among five daughters equally. coins among five daughters equally.

• All should get full coins. Find the All should get full coins. Find the minimum number of coins he has? minimum number of coins he has?