Why is quadrillion after trillion?

Answer 1

Not one hundred percent sure, but i think it works like this.

In math bi is like two like a bicycle has two wheels

In math tri is like three, like a tricycle has 3 wheels

In math quad can mean lots of things, but apparently it means four. Like quadruplets are four children that were born at around the same time.

Quint means 5, like quintuplets

Sex means 6

Sept means 7 like a septagon

Oct means 8 like an octopus or octogon, or octuplets

Non means 9 like a nonogon

Dec means 10 like a decagon, decimetre,

And so on...

Hope this helped