I'm not sure about how to solve the following problem
Randomly draw 5 cards from a deck of cards. What is the probability of getting two pairs and one of the 5 cards is Heart-7 (♥7)?
I solved it this way:
Case 1 (7 is a pair): (3C1)(12C1)(4C2)(11C1)
Case 2 (7 is not a pair): (12C2)(4C2)^2
So the probability is: ((3C1)(12C1)(4C2)(11C1) +(12C2)(4C2)^2)/(52C5)
But I think I'm missing something