Graphs are a useful way to show numerical data. There are a variety of graphs that can help highlight patterns and be used to reach conclusions. Choosing the right graph is very important. Bar charts ...

Roula Khalaf, Editor of the FT, selects her favourite stories in this weekly newsletter. Most universities demand that candidates demonstrate their English skills by taking IELTS. In part 1 of the ...

A pair of mathematicians solved a legendary question about the proportion of vertices in a graph with an odd number of connections. “It’s a bit of a surprise, at least for me, that such a combination ...