Rick Edwards: Why I love numbers

TV presenter Rick Edwards - of Channel 4's T4 - reckons he is a bit of a whizz with numbers.

BBC Radio 4's More or Less put his professed mental arithmetic skills to the test.

More or Less is broadcast on BBC Radio 4 on Fridays at 1330 GMT and repeated on Sundays at 2000 GMT. To listen again, visit the website or subscribe to the podcast.

(Image copyright: Ray Burmiston)