Of the 120 people in the room, 3/5 are women. If 2/3 of the people are married, what is the maximum number of women in the room who could be unmarried?

If a plane sits on a conveyer belt whose speed matches that of the plane in the opposite direction, can the plane take off?

Ralph goes to the hardware store to buy something for his house. He asks the clerk how much one will cost and the clerk looks it up and tells him it will be $3. He asks about buying twelve and is told it will be $6. Two hundred will cost $9. What is Ralph buying?

What 6-letter word has the same pair of letters in spots 1 and 5, a different pair in spots 2 and 6 and contains a 'u' in between?

Alfred and Bill are clerks at the local grocery store. Alfred can stock a shelf in 20 minutes, but Bill is new and takes 30 minutes. How long would it take for them to stock a shelf together?

A red-house is made of red bricks, has a red wooden door and a red roof. A yellow-house is made of yellow bricks, has a yellow wooden door and a yellow roof. What is a green-house made of?

Your are given the numbers 777, 888 and 999. Using the numbers once and adding, subtracting, multiplying or dividing, how can you make 999?

A boat full of people goes under a bridge and when it comes out the other side not a single person is on it. How can this be?

There were two men standing on a street. The one says to the other, "I have 3 daughters, the product of their ages is 36. What is the age of the OLDEST daughter?" The second guy says, "I need more information." So, the first guy says, "The sum of their ages is equal to the address of the house across the street." The second guy looks at the address and says, "I still need more information." So, the first guy says, "My oldest daughter wears a red dress."

He was the perfect gentleman even though his nephew couldn't see it. Who was he?

There are 111 players participating in a singles tennis tournament. The player who is losing will be out of the tournament. For each and every match, One new ball is taken. Find the no. of balls required for the entire tournament.

On a game show there are three closed doors - one hides a car and the other two conceal a goat. The contestant selects a door, which remains closed, and the host, knowing where the car is hidden, reveals a goat behind one of the remaining two doors. The contestant is then given the option to switch doors or stay with the one they originally selected. What should the contestant do to have the best chance of winning the car?

What word can be written forward, backward or upside down while still remaining the same word?

How can you cross out four letters from the word LIVING to leave six remaining?

The 17 items in your shopping cart weigh 8 pounds. But when your daughter puts in a ball, poster board and yo-yo the shopping cart weighs less. How is that possible?

Jim and Wanda both have some apples. If Jim gives Wanda an apple, they will both have the same number of apples. However, if Wanda gives Jim an apple, Jim will have twice as many as Wanda. How many apples do Jim and Wanda each have?

A mother of three children had six apples. She gave two to each and yet 4 remained. How was this possible?

Two days ago Lilly was 7 years old. Next year she will turn 10. How can this be?

If two hours ago it was as long after one o'clock in the afternoon as it was before one o'clock in the morning, what time is it right now?

A man gets off the bus looking for an address and approaches a couple walking in the same direction for directions. The woman says they're going that way and take him. Along the way the man asks if they're related. The woman grins and says, "We're not strangers. This man's mother is my mother's mother-in-law." The man is confused but doesn't say anything. When he gets back home he tells his wife about the conversation and she can't figure it out either. They decide to ask their lawyer and he eventually works it out with pen and paper. How are the couple related?

A dad told his son he would give him $5 for every correct answer on his math test. His son replied that he would pay $8 for every incorrect answer. There were 26 questions on the test and no money was exchanged. Why?

A dad offered to pay his son $5 for every correct answer on his math test. His son said he would pay his Dad $8 for every incorrect answer. There were 26 questions on the test and no money was exchanged. How?

How do you get 24 from 9, 6, 11 and 3 using addition, subtraction, multiplication and division?

5 friends live in the same road A, B, C, D, E. The numbers of B, C, D when multiplied together equals 1260. The numbers B,C, D when added equal twice E’s number, and is even. A’s number is half as much again as E’s. The road numbers run from 2 to 222. What are the 5 house numbers?

Using the five letters below only, create a nine-letter word.LOPER

Phil asks his friend Stan when his birthday is. Stan replies that he was 32 the day before yesterday and next year he'll be 35. When is his birthday and how is this possible?

What is half of 8? (Hint: It's not 4)

What is the longest word in the English dictionary?

If you and a friend have the same amount of apples, how many does she need to give you in order to have 10 more apples than her?

How can you write a date in 5 letters without using any numbers?

How many of each animal did Moses take on the ark?

How is 7 different from the rest of the numbers from 1-10?

Using all the digits from 1 to 7, what two numbers have the largest product? For example, 1234 x 567 = 699678 but you can do much better than that.

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?

How can the numbers 6, 1, 7 and 9 be arranged to make 24?

You are a spy and need to send an item to a contact in another country without letting anyone else have access to it. All unlocked items will be opened in transit. How can you send this item securely?

There are 10 boxes containing 10 balls each. 9 boxes contain 10 balls of 10 kg each and one box contains 10 balls of 9 kg each. Tool is available for proper weighing. How can you find out the box containing 9 kg balls? You are allowed to weigh only once. You can remove balls from the boxes. All balls are of same size and color.

A man wants to get into a night club where the bouncers test each person before they can enter. The man waits and watches. A woman walks up to the bouncers and the bouncers say 6. The woman replies with 3 and goes in. A small man walks up and they say 12. The man replies 6 and is admitted. The first guy thinks he's figured it out and walks up. They say 4 and the man replies with 2, but they don't let him in. What should he have said?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

A man and his son are in a car accident. The father dies on the scene, but the child is rushed to the hospital. When he arrives the surgeon says, "I can't operate on this boy, he is my son! " How can this be true?

A man is wearing black. Black shoes, socks, trousers, lumper, gloves andbalaclava. He is walking down a black street with all the street lamps off. A black car is coming towards him with its light off but somehow manages to stop in time. How did the driver see the man?

A man went to a party and drank some of the punch. He then left early. Everyone else at the party who drank the punch subsequently died of poisoning. Why did the man not die?

A man walks into a bar and asks the barman for a glass of water. The barman pulls out a gun and points it at the man. The man says 'Thank you' and walks out.

There is a man who lives on the top floor of a very tall building. Everyday he gets the elevator down to the ground floor to leave the building to go to work. Upon returning from work though, he can only travel half way up in the lift and has to walk the rest of the way unless it's raining! Why?

 Johnny’s mother had three children. The first child was named April. The second child was named May. What was the third child’s name?

 A clerk at a butcher shop stands five feet ten inches tall and wears size 13 sneakers. What does he weigh?

 Before Mt. Everest was discovered, what was the highest mountain in the world?

The minute and the hour hand of a watch meet every 65 minutes.How much does the watch lose or gain time and by how much?

How much dirt is there in a hole that measures two feet by three feet by four feet?

What word in the English language is always spelled incorrectly?

 Billie was born on December 28th, yet her birthday always falls in the summer. How is this possible?

In British Columbia you cannot take a picture of a man with a wooden leg. Why not?

If you were running a race and you passed the person in 2nd place, what place would you be in now?

Which is correct to say, “The yolk of the egg is white” or “The yolk of the egg are white?”

A farmer has five haystacks in one field and four haystacks in another. How many haystacks would he have if he combined them all in one field?

There is a certain crime, that if it is attempted, is punishable, but if it is committed, is not punishable. What is the crime?

Jack and Jill are playing cards for a stake of $1 a game. At the end of the evening, Jack has won 3 games and Jill has won $3. How many games did they play?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kitten, cats, sacks, wives. How many were going to St. Ives?

What came first, the chicken or the egg?

In Sahara desert , 3 men found a big 24L Jar is full of water. Since there is shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11 liter Jar. How do they do it?

Ankit Garg holidaying abroad fell off a yacht into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the yacht to realize someone was missing. The missing man was rescued two hours later. Why didn't he drown?

What happened when wheel was invented?

If two painters can complete two rooms in two hours, how many painters would it take to do 18 rooms in 6 hours?

Sean caught a prize fish last weekend. He was going to measure it but realized that his ruler was not long enough. He was able to measure the head and discovered that it was 9cm long, he then measured the tail and found that it was the length of the head plus half the length of the body. If the body was the length of the head plus the tail, what is the total length of the fish?

If it takes 2 garage mechanics 3 hours to repair 6 cars, how many mechanics would it take to repair 22 cars in 5 hours?

Gill’s puppy was growing fast. In the first five days since she got it it had eaten 100 dog biscuits. If each day it had eaten 6 more than the previous day, how many biscuits had it eaten on the first day?

Edward spent $21 on drinks for a party. If the bottle of vodka he purchased was twice the price of the case of beer, and the lemonade was half the price of the beer, how much did Edward spend on the beer?

If the price off a dress was cut by 20% for a sale, by what percentage off the sale price must it be increased by to resell it at the original price?

There is a number which is very peculiar. This number is three times the sum of its digits. Can you find the number ?

There is a number which is greater than the aggregate of its third, tenth and the twelfth parts by 58. Can you find the number?

A man has 53 socks in his drawer: 21 identical blue, 15 identical black and 17 identical red. The lights are fused and he is completely in the dark. How many socks must he take out to make 100 per cent certain he has a pair of black socks?

I have collected 253 strawberries which I want to put into punnets for handing out to my neighbours. All punnets must contain the same number of strawberries and I wish to use as few punnets as possible. How many of my neighbours received a punnet of strawberries, and how many strawberries did each punnet contain?

Subhash is 14 inches taller than Jatin. The difference between Subhash and Sanjeev is two inches less than between Sanjeev and Jatin. Subhash at 6'6" is the tallest. How tall are Sanjeev and Jatin?

There is a number, the second digit of which is smaller than its first digit by 4, and if the number was divided by the digit’s sum, the quotient would be 7. Can you find the number?

A train travelling at a speed of 50 mph enters a tunnel that is 1.75 miles long. The length of the train is 3/8 miles. How long does it take for all the train to pass through the tunnel, from the moment the front enters to the moment the rear emerges?

A monkey starts climbing up a tree 20ft. tall. Each hour, it hops 3ft. and slips back 2ft. How much time would it take the monkey to reach the top?

A person travels in a car with uniform speed. He observes the milestone, which has 2 digits. After one hour he observes another milestone with  same digits reversed. After another hour he observes another milestone  with same 2 digits separated by 0. Find the speed of the car?

A light bulb is hanging in the first floor of the room. There are three switches in the ground floor room. One of these switches belongs to that light bulb. The light bulb is not lit and the switches are in off state. There is only one chance to visit the room. How can it be determined which of these switch is connected to the light bulb.

Two fathers took their sons to a fruit stall. Each man and son bought an apple, But when they returned home, they had only 3 apples. They did not eat, lost, or thrown. How could this be possible?

The government pays farmers a specific fee for each row of four trees that they plant. An enterprising, but dishonest farmer found a way of planting five rows of four trees using only ten trees. How did he do it?

Michael have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the color of the socks. How many of the socks did he want to take to match one pair.

John, Jenita, Maria and Julie went to a shop. Each picked a colorful ball of a different favorite color. The colors are Yellow, Violet, Green and Red. John and Maria both do not like violet. The person who likes red is a girl. Jenita likes green, but it is not her favorite color. Jenita’s favorite color is either green or yellow, although she can have only one favorite color. John likes red, but it is not his favorite color.

Midas has boxes in three sizes: large, medium, and small. He puts 11 large boxes on a table. He leaves some of these boxes empty, and in all the other boxes he puts 8 medium boxes. He leaves some of these medium boxes empty, and in all the other medium boxes he puts 8 (empty) small boxes. Now, 102 of all the boxes on the table are empty. How many boxes has Midas used in total?

There are twenty coins sitting on the table, ten are currently heads and tens are currently tails. You are sitting at the table with a blindfold and gloves on. You are able to feel where the coins are, but are unable to see or feel if they heads or tails. You must create two sets of coins. Each set must have the same number of heads and tails as the other group. You can only move or flip the coins, you are unable to determine their current state. How do you create two even groups of coins with the same number of heads and tails in each group?

You have a three gallon and a five gallon measuring device. You wish to measure out four gallons.

You are mixing cement and the recipe calls for five gallons of water. You have a garden hose giving you all the water you need. The problem is that you only have a four gallon bucket and a seven gallon bucket and nether has graduation marks. Find a method to measure five gallons.

Which creature walks on four legs in the morning, two legs in the afternoon, and three legs in the evening?

In the middle of an otherwise empty field there lies a man wearing a pack. He is dead. There are no other clues visible. How did he die?

A basket contains 5 apples. Do you know how to divide them among 5 kids so that each one has an apple and one apple stays in the basket?

There are 8 identical balls. In that one of the ball is overweight. There are only two chances to weigh in the weighing machine. How to find the overweight ball?

A ladder hangs over the side of a ship anchored in a port. The bottom rung touches the water. The distance between rungs is 20 cm and the length of the ladder is 180 cm. The tide is rising at the rate of 15 cm each hour.When will the water reach the seventh rung from the top?

A man walks into a bar and asks the bartender for a glass of water. But the bartender takes out a gun and aims it at the man's head. The man says "Thank You" and walks out. Why?

What occurs once in every minute, twice in every moment, yet never in a thousand years?

There are 27 identical balls. In that one of the balls is overweight. There are only three chances to weigh in the weighing machine. How to find the overweight ball?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be?

A Man carries his son into the hospital because his son has a nail in his foot. The Surgeon then walks in and says "I cannot operate on this boy … he is my son".What is going on here?

A girl who was just learning to drive went down a one-way street in the wrong direction, but didn't break the law. How come?

Three tourists have an argument regarding the way they should go. Hans says that Emanuel lies. Emanuel claims that Hans and Philip speak the same, only doesn't know whether truth or lie. So who is lying for sure?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

A drawer contains 10 black and 10 brown socks that are all mixed up. What is the fewest number of socks you can take from the drawer without looking and be sure to get a pair of the same color?

There are five gears connected in a row, the first one is connected to the second one, the second one is connected to the third one, and so on. If the first gear is rotating clockwise what direction is the fifth gear turning?