Mystery of Missing Rupee
Dear Friends,
I am presenting to you a very interesting riddle. Once you get the answer to this you can pose this riddle to your friends, etc. I am sure most of them will not be able to solve the mystery of the missing rupee.
Riddle: Mystery of Missing Rupee
Three men walk into a hotel and rent a room for Rs. 30. They contribute towards the room rent equally. So each one of the paid Rs. 10
The hotel manager after sometime realized the room rent should have been only Rs. 25 rupees. So he sent the dishonest bellboy and told him to give Rs. 5 back to the men.
The bellboy cheated and gave each one of them Re. 1 back.
Now you know Rs. 27 (10-1 = Rs. 9 each) is paid by the 3 men and Rs. 2 is with the bell boy. That makes it Rs. 29 (27+2), so where is the remaining Re.1
**This question is actually meant to be asked when you are face to face with the other person.
I think its effectiveness and punch was somewhat lost in written words. Nevertheless, give it try and enjoy asking it to others.
Popularity: 35%
Learn Maths
The goal of this interesting puzzle is solving maths problems by applying what you learned at school. (If you still remember it)
Here is a simple arithmetic puzzle for your
I give you 3 digits and a result and you must put all the signs necessary to restore the equality.
I give you an example. The remainder you solve by yourself.
2 + 2 + 2 = 6
Easy! Isn't this? It is the same for the remainder.
Popularity: 40%
Time Keeping Puzzle
Here's a mathematical puzzle to puzzle you. If you crack this your sense of time is good 
Try it out -
Mr. Moody grumbles about bad time-keeping of trains from morning till night!
On one particular morning he was quite justified.
His train left on time for the one hour journey, to Clarksville, and it arrived 5 minutes late.
However, Mr. Moody 's watch showed it to be 3 minutes early, so he adjusted his watch by putting it forward 3 minutes.
His watch kept time during the day, and on the return journey in the evening the train started on time, according to his watch, and arrived on time, according to the station clock.
If the train travelled 25 percent faster on the return journey than it did on the morning journey, was the station clock fast or slow, and by how much?
Leave your answers below.
Popularity: 33%
Relationship between Length, Area and Volume
Lot of time we face problems related to change in area or volume when some dimension of the 2-dimensional figures or 3-dimensional object changes.
Here I am giving a small mathematical problem, which can be solved as soon as you finish reading it if you know the simple trick to answer it. In my next post I will explain this very helpful trick of finding the change in area of 2-dimensionals figures and volume of 3-dimesionals figures if their dimensions changes. Also relationships between surface area and volume of cube, sphere, pyramid, etc. will be explained. These tricks come very handy in competitive examinations.
Geometric Puzzle
I have a miniature Pyramid of Egypt. It is 6 inches in height. I was invited to display it at an exhibition. I felt it was too small and decided to build a scaled-up model of the Pyramid out of material whose density is 1/8 times the density of the material used for the miniature. I did some calculation to check whether the model would be big enough.
If the mass (or weight) of the miniature and the scaled-up model are to be the same, how many inches in height will be the scaled-up Pyramid?
Now it’s upto you to answer this and figure what could be the trick to solve such questions.
Leave your answers and comments below:
Popularity: 32%
Mathematics of Lord Bramah
Alike Vedas which is the primary source of Vedic Mathematics, mathematics is also extensively used in Indian Mythology. I have picked up a very interesting story related to the creator of universe, Lord Bramah. The story is narrated in the word of the original author -
"In the great temple at Benares, beneath the dome which marks the center of the world, rests a brass plate in which are fixed three diamond needles, each a cubit high and as thick as the body of a bee. On one of these needles, at the creation, God placed sixty-four disks of pure gold, the largest disk resting on the brass plate, and the others getting smaller and smaller up to the top one. This is the Tower of Bramah.
Day and night unceasingly the priests transfer the disks from one diamond needle to another according to the fixed and immutable laws of Bramah, which require that the priest on duty must not move more than one disk at a time and that he must place this disk on a needle so that there is no smaller disk beneath it. When the sixty-four disks shall have been thus transferred from the needle on which at the creation God placed them to one of the other needles, tower, temple, and Brahmins alike will crumble into dust, and with a thunderclap the world will vanish."
The above tower will look something similar to the figure shown below
Now friends it's up to you to find out the time which the priests will take to complete the task.
By the way this world's end prophecy is one of the most optimistic on record!
Popularity: 39%
Puzzles, Riddles with Mathematics?
Yesterday I got a mail from one of my old friend, who is a genius in mathematics and one of the best critic of my work. He posed a simple question in that mail. I believe that simple question is relevant for all.
"Why are you mixing puzzles, riddles or brainteasers with mathematics?"
Actually he wanted to ask why I am posting puzzles, riddles or brainteasers on QuickerMaths.com
I thought of many points. But don't worry I will not burden you with "Why to Solve Puzzles?" list.
Popularity: 27%
Very Funny Riddles
Very Funny Riddles- After lots of serious and difficult riddles it’s time for some funny riddles. They have funny side to them and yet they are very interesting riddles. Let’s see who will be the first to solve them all.
1. What is it?
Arnold Schwarzenegger has a big one
Micheal j fox has a small one
Madonna doesn't have one
the pope has one but he never uses it
Bill Clinton Has one and he uses it all the time!
Popularity: 31%
Six Degrees of Separation – Let’s have some fun!!
In this post I am starting a very interesting game on QuickerMaths.com. Friends, start playing this and I am sure you will enjoy it.
To play this game let us first understand what is Six Degree of Separation.
What is Six Degree of Separation?
Six degrees of separation is an unproven theory that anyone on the planet can be connected to any other person on the planet through a chain of acquaintances that has no more than five intermediaries. The theory was first proposed in 1929 by the Hungarian writer Frigyes Karinthy in a short story called "Chains."
Popularity: 22%
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