# Modern Maths Archive

In our journey of learning mathematics, we must have across a mathematical constant called “e”. It is approximately equal to 2.71828. Unfortunately, most of us memorized the value and its usage without bothering about the concept behind

Grouping and Distribution This is a very important concept of permutation and combination where some higher order fundamentals of permutation and combination is involved – the reason for reserving this topic for the end. What is the

This article is the fourth in a series of 5 articles. Here we will be discussing a pet topic of all competitive examinations – Combinations. I would advise you to go ahead with this article only after

Since you are already familiar with the fundamental principle of counting and the concept of permutations, we can move ahead with some special cases of permutations in this article. By now you already know: # With respect

This article is the second of a series of five articles. In the first part we had discussed the fundamental principle of counting. The first part is essential for you to understand the difference between ‘and’ &

Permutations and Combinations is one of the most logical phenomenon of mathematics wherein there are no formulae to mug up. Rather, it tests your ability to understand the problem and interpret the situation logically. It is more

I received quite a few requests for putting up a write up on probability. Today I finally decided to pen it down. Probability tells how likely something is to happen. It tells the chance that an event

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

Find the answer to these questions instantly using the simple trick given below – How to find the day of the week on which your birthday will fall next year? or, Which day of week was my

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?

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