In math, what lists can be summed into series?

More Questions:

Facebook was originally developed as a social tool for students at which university?

What company invented the floppy disk in 1970?

Defenestration is the act of being thrown out of what?

Where in the UK would you go to celebrate "Uphelia'" shortly after Christmas?

In the restaurant world, what does the term "Omakase" translate to in English?

The character Uriah Heep appeared in which Charles Dickens novel?

Sierra Leone lies along the shores of which ocean?

What is studied by nephrology?

What type of number has no factors other than 1 and itself?

What movie earned John Wayne his first Academy Award?

What nickname is shared by Charles Russell, Harold Reese, and Paul Reubens?

What animated series began as a video Christmas card the creator sent to 80 of his pals?

The Emmy Awards honor excellence in what industry?

In Norse mythology Odin traded an eye for what?

What is the longest running Star Trek series of all time in terms of total episodes?