# Olympiad Corner: What Is The Sum Of The Corner Entries?

In a 4 x 4 array of 16 numbers, the sum of the numbers in each row, column, and diagonal is 1. Find the sum of the numbers in the four corners of the array.

Do you have a mathematical question to ask? Do you need assistance to get some concepts right? Do you want to learn more? Approach us with your queries and we would be happy to help!

## A Problem on AM GM Inequality

If a + b + c + d = 3s and all numbers are positive, show that (abcd)/81 is greater than or equal to the…

## Olympiad Corner: An Expression Under The Square Root

Find the product of four consecutive numbers. Add 1 to this product. Extract the square root of this expression. What is the value? How to…

## Indian Mathematics: How To Write A Magic Square?

A magic square is a square of numbers where each row, column, and diagonal gives the same sum. A n x n magic square has…

## The Sum of Odd Numbers is a Perfect Square!

Take the first three odd numbers: 1, 3, and 5. The sum is 9. First four odd numbers add up to 16. And 25 is…

## Olympiad Corner: How Many Right Triangles?

How many right triangles have their area double of their perimeter? How to find the exact number of such triangles? Do you have a mathematical…