Odds of Flopping 3 of a kind

[Dovberman]

If I have a pair in the hole, is this a correct way to calculate the odds of flopping three of a kind ?

(2/50 * 46/49 * 45/48)

Plus

(46/50 * 2/49 * 45/48)

Plus (46/50 * 45/49 * 2/48)

Which really means that I need to consider all the ways
that the flop could occur.

Thanks