Or search by topic
For example:
= VLOOKUP (63, A1: E11, 5)
would look down the first column of the range A1: E11 until 63 was
located, then return the value in that same row but in the fifth
column.
Euler found four whole numbers such that the sum of any two of the numbers is a perfect square...
A woman was born in a year that was a square number, lived a square number of years and died in a year that was also a square number. When was she born?
The diagram illustrates the formula: 1 + 3 + 5 + ... + (2n - 1) = n² Use the diagram to show that any odd number is the difference of two squares.