People with the most acute sense of smell can distinguish at least 10,000 different odours.

221B Baker Street – fictional home of Sherlock Holmes has never actually existed.

Route 66, first designated in 1926 and running 2,448 miles from Chicago to Santa Monica, was removed from the US road numbering system in 1985. It lives on in song and a popular 1960s TV series.

Telephone numbers began as the result of a measles epidemic in Lowell, Massachusetts.

The world’s most expensive phone number is 666-6666 – a cell phone number auctioned in Qatar in 2006. Needless to say, 6 is a lucky number.

57 was never an exact number of Heinz products. Henry J. Heinz chose the number in an advertising campaign of 1896 because 5 was his lucky number and 7 his wife’s.
In plus fours, the four refers to the 4 inches of additional cloth needed to extend the leg to below the knee.

Coco Chanel chose ‘5’ for her iconic perfume which was, to her, an almost sacred number.

The way numbers look is one of the many ways in which they are named by bingo callers, as in 2 – one little duck and 88 – two fat ladies.