Add new comment

Permalink Submitted by Anonymous on January 18, 2015

this is right., E=32 in this case.

If it is given that there are no edges you set E=0.

in general
E=V+F-2

Maths in a minute

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.

Keeping up with COVID-19

Trying to work out the real time incidence of a disease in the middle of pandemic has never been done before, but the team behind the ONS COVID-19 Infection Survey have developed a way to do just that.
The maths of COVID-19

All our COVID-19 related coverage at a glance.
Testing testing in schools

What's the safest way to reopen schools? And can testing make things better?
The hardest logic puzzle ever

Try your brain at this tricky, but lovely, riddle.
Triangular number patterns

There are triangular numbers hiding all over the standard multiplication table! Find out how to discover them in this article!