Question

You pick cards one at a time without replacement from an ordinary deck of 52 playing cards. what is the minimum number of cards you must pick in order to guarantee that you get a pair?a. a pair (for example, two kings or two 5s). b. three of a kind (for example, three 7s).

Answer 1

a) 2

b) 3

Explanation:

supposing you got lucky or the deck wasn't shuffled, the first 2 cards could very well be a pair (or the first 3 a three of a kind)