Quicker Maths
30Dec/1012

Interesting Riddles

Funny Interesting Riddles for you : In this post we have tried to give you few witty, funny but interesting riddles. Try to use your brain but friends don't take them to seriously.

Interesting Riddles

  1. How many times can you subtract 5 from 25?
  2. What two things can never be eaten for breakfast?
  3. Before Mount Everest was discovered, what was the highest mountain on Earth?
  4. The person who makes it doesn't want it. The person who buys it doesn't use it. The person who uses it doesn't see
Filed under: Puzzles Continue reading
25Oct/107

Climbing Problem of Creepers

Another puzzle for you guys. I know there are lot of puzzle enthusiasts out there.

This is an interesting puzzle related to understanding of circular motion. You can solve the puzzle by logic or having some basic mathematical understanding of circular motion. Try it out!

Puzzle

Two creepers, one jasmine and the other rose, are both climbing up and round a cylindrical tree trunk. The jasmine twists clockwise and the rose anti-clockwise, and they both start at the same point on the ground. Before they reach the first branch on the tree the jasmine has made 5 complete twists and the rose 3 twists.

Not counting the bottom and the top, how many times do they cross?

Filed under: Puzzles 7 Comments
23Oct/1019

Something for the Chickens

A simple mathematical logic says -

odd + odd = even

odd + even = odd

even + odd = odd

even + even = even

Now since you know this have a look at the small riddle below -

A friend of mine runs a small poultry farm in Bangalore.  She took me round to see the place. I counted the number of chickens. There were 27 of them. And there were 4 enclosures. I noticed that in each enclosure there were an odd number of chickens.

Can you tell how many there were in each enclosure?

Filed under: Puzzles 19 Comments
21Sep/107

Dangerous Wine Tasting

You are the ruler of a medieval empire and you are about to have a celebration tomorrow. The celebration is the most important party you have ever hosted. You've got 1000 bottles of wine you were planning to open for the celebration, but you find out that one of them is poisoned. The poison exhibits no symptoms until death. Death occurs within ten to twenty hours after consuming even the minutest amount of poison. You have over a thousand slaves at your disposal and just under 24 hours to determine which single bottle is poisoned. You have a handful of prisoners about to be executed, and it would mar your celebration to have anyone else killed. What is the smallest number of prisoners you must have to drink from the bottles to be absolutely sure to find the poisoned bottle within 24 hours?

Filed under: Puzzles 7 Comments
19Sep/108

Perfect Square Puzzles

Squaring Puzzles- Find below 2 interesting puzzles related to square of some number. Hope you will like them.

Puzzle 1

The square of 13 is 169.  Take the last digit of the square, 9, and place it in the middle, making 196.  This is the square of 14, the next number above 13.

What are the next numbers which also have this property?

Puzzle 2

The following multiplication example uses every digit from 0 to 9 at least once.  Letters have been substituted for the digits.  Can you replace the letters and make the original multiplication problem?

B O G
x     B O G
_______________
L Y L E
G G U L
T U O O
___________________
U N I T O E

Filed under: Puzzles 8 Comments
13Sep/108

Grid Based Puzzle

Friends based on the emails I am getting I think most of you like creative and interesting logical puzzles.  So I am presenting another very interesting grid puzzle one for you.

Grid Puzzle

Below is a very special grid, around each shaded number are 8 white squares. However, each white square should have a number from 1 to 7. Once filled in, these 8 numbers will sum to the shaded number. In addition, once completed correctly, no row nor column will contain a duplicate number within a white square. For example, the top row may be 5 6 4 2 3 1 7, etc. hence no digit repeated (similar to Sudoko)

Figure-1

Try to fill all the blank spaces. Leave your answers below by writing the numbers row-wise.

If you like the stuff here on QuickerMaths.com, you can share it with your friends on FaceBook using the Like it button.

Answer (posted on September 17, 2010)

Filed under: Puzzles 8 Comments
8Sep/1011

Time Measurement Riddle

After quite a few days I am posting a riddle. I assure you it's very interesting. Though it may seem a little difficult when you first read it, maintain your cool and ponder over it again.

Suppose you have ten threads and a lighter. If a thread is lighted, it will burn for exactly one hour. The threads do not burn at constant speed, in other words it can happen that the first half of the thread is burned in 15 minutes, while the remaining part will take three quarters. How can you measure exactly 45 minutes using these threads, and what is the minimum of threads you need for this?

If you need any clarification, leave your queries as comment.

Leave your asnwers below as comments.

Try your hand at another interesting time keeping puzzle

Filed under: Puzzles 11 Comments
1Sep/101

Mind Boggling Math Puzzles: Millennium Prize Problems

Quicker Maths offers regular tips and tricks for zooming through some arithmetic problems, as well as giving us fascinating puzzles that offer some solid food for mathematical thought. But what if you were given the opportunity to earn one million dollars to solve one math problem? That's exactly the deal that the Clay Mathematics Institute in Cambridge Massachusetts has offered. And pretty much anyone can enter to win.

The Millennium Problems, as they are known, were originally seven math problems that had existed for several years and remained unsolved. Most recently, one problem--the Poincare Conjecture--was successfully solved by Dr. Grigory Perelman of St. Petersburg, Russia. Perelman worked on and solved the problem in 2002 and 2003, and was thereafter awarded the CMI one million dollar prize in 2010, although he ended up turning down the prize money.

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22Aug/1025

Average Number of Arms

Try out this probability question. It may seem very simple but think twice before giving the answer

What is the probability that the next person you meet has an above average number of arms?

  1. Impossible
  2. Unlikely
  3. Likely
  4. Very Likely
  5. Certain

Leave your answers below as comment -

Filed under: Puzzles 25 Comments
13Aug/1017

Red Wine Brain Teaser

This question relates to the solution and mixture topic. You have a bucket of red wine and a bucket of white wine. You take a cup of red wine and pour it into the bucket of white wine. After thoroughly mixing, you then take a cup of this mixture and pour it back into the red wine bucket.

Is there more red wine in the white wine or is there more white wine in the red wine?

Feel free to post your answer in the comments section.

Filed under: Puzzles 17 Comments