Probability of getting the same pocket pair 4 times in a row?

[LetYouDown]

Odds of any pair preflop = 13/220. So, to answer the other part of your question (any pair 5 times in a row), it's as simple as (13/220)^5 or about 1388023 to 1.

[FishHooks]

read the thread title, he said the same pocket pair, then asked another question in the post, kinda confusing but I think he ment the same pocket pair, not any.