Quicker Maths » brainteaser puzzles

3 Men and 5 Hats – Brainteaser

admin — Wed, 19 Jan 2011 00:20:29 +0000

Interesting Brainteaser

3 innocent prisoners were sitting in a jail. One day, the cruel jailer takes them out and places them in a line on three chairs, in such a way that man C can see both man A and man B, man B can see only man A, and man A can see none of the other men.

The jailer shows them 5 hats, 2 of which are black and 3 of which are white. After this, he blindfolds the men, places one hat on each of their heads, and removes the blindfolds again. The jailer tells his three prisoners that if one of them is able to determine the color of his hat within one minute, all of them are released. Otherwise, they will all be executed. None of the prisoners can see his own hat, and all are intelligent. After 59 seconds, man A shouts out the (correct) color of his hat!

What is the color of man A's hat, and how does he know?

Puzzling Puzzle

admin — Sat, 20 Feb 2010 17:14:09 +0000

Who should be the Boss?

A large business firm was once planning to open a new branch in a certain city, and advertised positions for three clerks. Out of a number of applicants the personnel manager selected three promising young men and addressed them in the following way : "Your salaries are to begin at the rate of $1000 per year, to be paid every half-year. If your work is satisfactory, and we keep you, your salaries will be raised.

Which would you prefer, a raise of $150 per year or a raise of $50 every half-year?" The first two of the three applicants eagerly accepted the first alternative, but the third young man, after a moment's reflection, took the second. He was promptly put in charge of the other two. Why? Was it because the personnel manager liked his modesty and apparent willingness to save the company money?

Headless Words Puzzle – Funny Puzzles

admin — Tue, 29 Dec 2009 10:25:19 +0000

Can you find these words from the clues?

If the clue were ‘Behead a mass killing to find amusement’, the answer would be LAUGHTER, since by beheading SLAUGHTER you are left with LAUGHTER.

Behead a journey by air to find illumination.
Behead a mark to produce a running competition.
Behead anger to find your years.
4. Behead a seat to get head covering.
Behead an apparition to find an entertainer of guests.
Behead a support to get a bat for tennis.
Behead the result of injury to make a vehicle.
Behead an old weapon to find a fruit.
Behead attractiveness to produce damage.
Behead a section to get lousy insects.

Logical Questions: Logical Puzzle

admin — Tue, 29 Dec 2009 09:18:59 +0000

In a day at the library, 64 people borrowed books. Twice as many people borrowed a thriller only as borrowed a science fiction novel only. Three people borrowed a biography only and 11 people borrowed both science fiction and a thriller but not a biography. The same number borrowed a biography and a thriller but not a science fiction as borrowed one of each of the three types. Twenty-one people did not borrow a thriller. One more person borrowed a science fiction book and a biography book than borrowed a biography only.

How many biographies were borrowed in total?
How many people borrowed only two of three types?
How many people borrowed a thriller, a biography and a science fiction?
How many people borrowed a thriller only?

Age Puzzle Game

admin — Sat, 26 Dec 2009 09:28:32 +0000

Age Puzzle

If you are 12 years or over:

Write down your age.

Reverse the figures.

So, if your age is 13, reversing the figures gives 31.

Take away your age from the second number.

Divide by nine.

You may not believe it but we know there won’t be remainder. Try it with anyone’s age.

English puzzle

admin — Sat, 26 Dec 2009 05:10:02 +0000

My friend asked me this question: “my grandmother’s age is a perfect square. Also, it is equal to the difference the square of my father’s age and the square of my mother’s age. My father is one year older than my mother. Can you tell me how old my mother is?”

Maths Puzzle

admin — Thu, 24 Dec 2009 11:22:12 +0000

Which of the following words is the odd one out?

Capricious
Fickle
Unstable
Spurious
Inconstant

Top Puzzle

admin — Thu, 24 Dec 2009 07:47:39 +0000

A frog at the bottom of a well climbs up 3 ft every day, but slips back 2 ft during the night. How long will it take to reach the top, if the well is 20 ft deep?

Grade Puzzle

admin — Thu, 24 Dec 2009 05:16:58 +0000

Out of 100 people surveyed, 86 had an egg for breakfast, 75 had cornflakes, 62 had toast, and 82 had coffee. How many people, as least, must have had all four items?

Common Puzzle

admin — Wed, 23 Dec 2009 12:21:08 +0000

Here are American phrases and isioms that have become common in our country. Do you know what they mean?

1. off the wall

2. greenbacks

3. a grand

4. street-smart

5. yuppie

6. nerd

7. high five

8. spaced out

9. over the top

10. push the envelope

11. double take

12. hype