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.
Shortcut to Find Square of a Number
Today I will discuss a very simple method of finding square of numbers between 26 to 74 mentally. In the subsequent post we will cover higher numbers. So keep watching this space to learn squaring any number within your mind
Square (also called perfect square) is an integer that is the square of an integer; in other words, it is the product of some integer with itself. So, for example, 9 is a square number, since it can be written as 3 × 3.
How to find the square of any number?
To apply this method you should know squares of 1 to 25 by heart. You can refer to this table to learn the same.
Quick calculations for extremely large numbers
A guest post by Nandeesh H.N. of Kolkata
Quick calculations with a few logarithms
If you can remember a few logarithms, you can do many calculations quite easily without the aid of calculators or computers.
Try to remember the logarithms of just seven numbers:
Log 2 = 0.30, log 3 = 0.48, log 7 = 0.85, log 11= 1.04, log 13= 1.11, log 17 = 1.23 and log 19=1.28.
The logarithm of a composite number is equal to the sum of the logarithms of its prime factors; you can formulate the following table of logarithms:
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.
Shortcut Method for Multiplication
A guest post by Nandeesh H.N. of Kolkata
Shortcut multiplication for approximate numbers
When applying the rules of multiplication of exact numbers to approximate numbers we waste time and effort in the computation of digits that will be dropped at a later stage. The computation can be made more efficient if we are guided by the following rules:
Herons Method of Finding Roots
A guest post by Nandeesh H.N. of Kolkata
"Dear Vineet,
I am really grateful to you for your blog which makes Mathematics a pleasure. Keep up your good work. As requested by you I am sending a brief note on Heron’s method of finding square root. This method can be easily extended to find any root.
Find Day of the Week on Any Date
Lots of time we are in a situation where we are supposed to know the day on a particular date of the current year. Most of the methods you will come across are not mentally possible for everyone and hence not feasible. So find below a practical Quicker Maths method of finding what day of the week will be on a particular date.
Find the day on any date of current year
I have come across a very simple way to find the day of the week for any date of the current year. This idea is so easy, that most of you will wonder why you didn't think of it yourselves.
All you have to do is........
Who is behind QuickerMaths?
I am Vineet Patawari - PGDM (IIM Indore), ACA, B.Com(H). My passion for Mathematics, specially Vedic Maths encouraged me to start QuickerMaths
I believe that if trained properly using powerful tools like Vedic Maths, the immense intellect of human mind can be ignited instantly - find out more
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Recent Comments
watchman was paid for awaking not for sleeping so that he can see dreams.. – 05Feb12
as a night watchman he shouldnt have slept at night to get that dream... – 04Feb12
Can u plz give me clarity in ur solution Kaush sir..... – 04Feb12
thanks for these tricks. Are these from the book "quicker maths by m.tyra" ? – 03Feb12
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