Answer:
0.008418 or 0.8418%
Step-by-step explanation:
Since the first two cards are already set as the three of diamonds and the king of diamonds, all of the five cards must be diamonds to get a flush. For the third card, there are 11 diamonds within the 50 remaining cards. If we get a diamond, for the fourth card, there are 10 diamonds within the 49 remaining cards and then 9 diamonds within 48 cards for the last pick. The probability of getting a flush is:
[tex]P(flush) = 1*1*\frac{11}{50} *\frac{10}{49}*\frac{9}{48} =0.008418 = 0.8418\%[/tex]
There is a 0.008418 or 0.8418% of getting a flush.