The {n}th tetrahedral number is the sum of the first n Triangular numbers. Triangular numbers are the sum of the first n integers (1, 3, 6, 10, 15, etc.), and taking the sum of the triangular numbers results in the tetrahedral numbers (1, 4, 10, 20, 35, etc.)
The fifth tetrahedral number is the sum of the first five triangular numbers. The first five triangular numbers are 1, 3=1+2, 6=1+2+3, 10=1+2+3+4, and 15=1+2+3+4+5, so the sum of these numbers is 1+3+6+10+15= 35.
Similar to a love triangle, a love tetrahedron is a messy situation where four individual are involved in lies, machinations, and deceipt as a result of love or lust - ultimately ruining friendships and/or changing living arrangements.
1. Paul, Paul's roommate, Bob, Bob's girlfriend Elizabeth, and Elizabeth's best-friend, Sheryl where involved in a love tetrahedron. Bob was asked to move out of Paul's pad.
This boss chemical is the secret that will rock your world. Remember the Hindenburg? You don't want that for your hydrogen powered car. This chemical locks the hydrogen up for safe keeping, until it is released with heat to become available in your engine.
Friend: Dude, why did you snag that hydro-car at the dealio? You are going to be a freakin' 4th-of-July display when that sucker blows. Hydrogen burns like a mutha you sucka!
Buyer: Not to worry my future fearing friend, the hydroms are locked up in sodium tetrahydroaluminate.
A plate of brown consists of foods that have little to no nutritional value, and are typically deep fried. A true plate of brown will also be accompanied by a dark soda.
When finance content creators rent out fancy cars and flex cash to seem richer than they really are in order to promote and sell their “get rich quick” courses.
The use of the word "blue" to refer to sexually explicit content was first recorded in Scotland in 1824. "Blue" meant "lewd" because prostitutes dressed in blue gowns.