MATH TRIVIA SA PAG TUTURO SA MAKABAGONG PANAHON
2 is called the "oddest" Even-Prime number. 2 is a unique Even-Prime because while all Evens are divisible by 2, any number apart from 2 that is divisible by 2, is not a Prime.
40 when written "forty" is the only number with letters in alphabetical order, while "one" is the only one with letters in reverse order.
Submitted by: Rob
The sum of the digits of a number which is a multiple of 9 is always 9, ie,
45 : 4+5 = 9
1980 : 1+9+8+0=18 : 1+8 = 9
214164 : 2+1+4+1+6+4=18 : 1+8 = 9
etc.
http://www.youtube.com/watch?v=hLdKsKep1og
