Star Trek: The Original Series, Season 1

Kirk:
Mr. Spock, you are second in command. This will be a dangerous hunt. Either one of us, by himself, is expendable. Both of us are not.

Spock:
Captain, there are approximately one hundred of us engaged in this search against one creature. The odds against you and I both being killed are two thousand, twenty eight point seven to one.

Kirk:
Two thousand, twenty eight point seven to one? [Spock nods] Those are pretty good odds, Mr. Spock.

Spock:
They are of course accurate, Captain.

Kirk:
Of course. [pause] Well, I hate to use the word, but logically, with those kinds of odds, you might as well stay. But please stay out of trouble, Mr. Spock.

Spock:
That is always my intention, Captain.