10 (ten) is the number 1 greater than 9 and 1 less than 11. It is the base unit of the most commonly used numbering system, decimal. As such, it has many unique properties and identities. It is the base of the common log, the order of magnitude, and the first two-digit number. It is represented in Roman numerals as X.
In pool, 10 is the blue stripe. The 10th element is Neon. There are 10 years in a decade. There are 10 dimes in a dollar and 10 cents in a dime. The 10th month is October. An animal with 10 legs is a decapod. 2-10-0 steam locomotives are nicknamed Decapods. 10 10s make a 100. There are 10 commandments in The Ten Commandments and in The Other Ten Commandments. There are 10 pins in a bowling lane. There are 10 events in a decathlon.