Mathematics
2 verified facts in this category.
- A pizza can be cut into 11 equal pieces using only 4 straight cuts, and more generally, n straight cuts can divide a circle into up to (n²+n+2)/2 pieces—far more than the 2n pieces most people expect.
- The number 73 is the 21st prime number, and its reverse 37 is the 12th prime, while 21 is the product of 7 and 3—making it a 'prime factor mirror prime' and Sheldon Cooper's favorite number in The Big Bang Theory.