
There's an infinite NUMBER
of possibilities.
The Big Bang Theory Season 12, Episode 23

Based on the NUMBER of chirps
per minute and the temperature...
The Big Bang Theory Season 3, Episode 2

It's the atomic NUMBER for technetium.
The Big Bang Theory Season 6, Episode 8

"He multiplies N
by the NUMBER of He,
The Big Bang Theory Season 7, Episode 3

Image NUMBER four:
boa constrictor.
The Big Bang Theory Season 7, Episode 5