There is a very interesting concept called Cyclic Number.
Cyclic Numbers can be defined as a number with n digits, which, when multiplied by 1, 2, 3, …, n produces the same digits in a different order.
There are few very famous cyclic numbers. We have given a puzzle question below, if you could answer the puzzle [...]
Two generations ago Ran had 2 x 2 or 22, or 4 ancestors. Three generations age he had 2 x 2 x 2 or 23 or 8 ancestors. For generations ago he had 2 x 2 x 2 x 2 or 24 or 16 ancestors.
Assuming that there are 20 years t o a generation, can you tell 400 years back how many ancestors did Ram have?
The Man at St. Ives
This is one of the oldest riddles in history. According to few this riddle has been included in the Guiness Book of Records. Though we are not sure about that. But anyways try giving the answer to this ancient riddle!!
How many were going to St. Ives?
“As I was going to St. [...]
Teasing Brain Teaser!!
I met Sweety first time in a marriage party in Kolkata. We exchanged our phone numbers and decided to meet each other soon. When she rang up and invited me to her house, she decided to tease me.
This is how she gave me the number of her house on a particular street:
“I live [...]
The Lily Pond Riddle
In India water lilies grow extremely rapidly. In one pond a lily grew so fast that each day it covered a surface double that which it covered the day before. At the end of the 30th day it entirely covered the pond, in which it grew. But how long would it take [...]
Ancient Indian Mathematicians and Their Teachings
We are starting a very special series “Teaching of Indian Mathematicians”.
In this special series we will discuss various concepts propounded by Indian mathematicians which are very useful even today.
Formula for cyclic quadrilateral propounded by 9th Century Indian Mathematician Mahavira
First in this series, I am explaining a very nice concept propounded [...]
Is 1 a Prime Number?
Friends, in one of the post where I have described ‘Prime’ and ‘Composite’ Numbers, one of the curious visitor have asked me a very logical question. I will quote that question for your reference –
Text from Previous post-
“Prime and Composite : Any integer which is divisible by 1 and itself only [...]
Comparison of fractions: Suppose, some fractions are to be arranged in ascending or descending order of magnitude.
Rule: Convert each one of the given fractions in the decimal form. Now, arrange them in ascending order as per requirements.
Multiplication of a decimal Fraction by a Power of 10: Rule: Shift the decimal point to the right by as many places of decimal as is the power of 10.
What is the difference Between Rational and Irrational Numbers?
Rational Numbers: – Every integer and fractions are rational numbers. It can always be denoted as p/q, where p and q are integers and q is not equal to 0.