Cool facts about mathematics 😎

1. The word “hundred” comes from the old Norse term, “hundrath”, which actually means 120 and not 100.

2. In a room of 23 people there’s a 50% chance that two people have the same birthday.

3. Most mathematical symbols weren’t invented until the 16th century. Before that, equations were written in words.

4. “Forty” is the only number that is spelt with letters arranged in alphabetical order.