It contains exactly one thousand unique characters.

A word of weight and length is called regular if in every interval it contains exactly one nonzero entry for all .

More intuitively, this means that if we chop up the message in w equal parts, then each part contains exactly one nonzero entry.

And then you wonder how to make a sphere that contains exactly X atoms.

It was a list containing exactly one hundred items.

Of course that Kleenex would contain exactly the particles I wanted to study.

In other words, the orbit contains exactly p distinct points.

For most organisms, humans included, the catalogue contains exactly 22 amino acids.

Usually each partition contains exactly one file system.

A binary compound is a chemical compound that contains exactly two different elements.