Number of countries to have successfully landed a man on the Moon

Number of horizontal stripes on the flag of Poland

Number of children in 'The Simpsons' family

Number of nucleobase types in DNA

Number of Pillars of Islam

Number of official languages of the United Nations

Number of former-Yugoslav countries, according to Sporcle's 'Countries of Europe' quiz

Number of bits in a byte

2009 animated science fiction film set in a dystopian world

House number of the UK Prime Minister's Downing Street residence

Number of sides on a hendecagon

Largest number with one syllable

Triskaidekaphobia is a fear of this number

Number of lines in a sonnet

Number of players from a rugby union team on the field during play

Number that appears in Pope Benedict's official title

Number of Oscar nominations Meryl Streep has received

Number of chapters in James Joyce's 'Ulysses'

Title of Adele's first album

Number of sectors on a standard dartboard