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 [...]
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.
There is a very small difference between natural numbers and whole numbers. It is important to know this because of both the terms are repeatedly used in questions of competitive examinations.
E.g. For the perfect no. 28. 1/1+1/2+1/4+1/7+1/14+1/28=2
Natural number: Numbers used to count the objects is natural are called the natural numbers e.g. 1, 2, 3…
Even and Odd: Any integer which is divisible by two is called an even number. Any integer which is not divisible by two is called an odd number.
N.B.: Zero has not been categorized in either of the two categories.
Prime and Composite : Any integer which is divisible by 1 and itself only is called a [...]
Vulgar Fraction: The fractions such us 3/11, 5/14, 2/10, 67/100 are called common or vulgar fractions.
1.Imaginary Number: Any number which is of the form √ -1´a is an imaginary number
they had forgotten to write their names.
Parveen returned the papers to students at random.
What is probability that none of three students will get the right paper?