Probably should of started this long ago, but heck, I forget things sometimes and this was an example of that! A couple of facts today concerning the number 3 aaaaare :
In Greek mythology you will find Cerberus, a three-headed dog, and Scylla, a sea monster with six heads. It is curious that mythological heads are inclined to come in multiples of three.
Any colour can be mixed from just 3 primary colours.
Oaths are traditionally repeated 3 times.
And on a personal note I know it takes me 3 try's of jam on toast before I admit defeat and opt for just butter instead.