Question: if 2 cards are drawn from probability?
Answer: The total probability is the product of two probabilities: the probability to draw diamond from original deck, which is 13/52 times the probability to draw a diamond from the remaining 51 cards, provided the first card drawing is diamond, which is 12/51. So, p=13/52*12/51=1/4*4/17=1/17; Answer to a.