The probability of getting drawing a king and queen from a deck of 52 cards without replacement is $\frac{4}{52} \frac{4}{51}$. I'm confused why it's not twice of this. We could achieve a king and queen in 2 different ways. First drawn card is a king and second drawn card is a queen, or first drawn card is a queen and second drawn card is a king. These are disjoint events, so wouldn't the probability actually be $\frac{4}{52} \frac{4}{51} + \frac{4}{52} \frac{4}{51}$?
I saw the first result left by the comment by tpb261 in Probability in cards that $4$ people each get queen and king?.