A square number is the result of multiplying a number by itself.. This can also be called a 'number squared'. The symbol for ‘squared’ is ². For example, you would write 3 squared like this ...

From a set of six numbers, use your innovation to identify three whose sum is a perfect square ...

And to get the next pseudorandom number, we can square 5,353, which gives us 28,654,609, the middle four digits of which are 6,546. Of course, many four-digit numbers have a square that’s seven ...

Presumably, that’s as big as a set of numbers can get. But Cantor showed that, paradoxically, though the number of fractions is the same as the number of integers, there are demonstrably more ...

A square number is the result of multiplying a number by itself.. This can also be called a 'number squared'. The symbol for ‘squared’ is ². For example, you would write 3 squared like this ...