Card number 1, 2, 3, ..., 10 are placed in a box. The box is shaken and a blindfolded person

selects a successive cards without replacement.

a) What is the probability that the first card selected is number 6 ?

b) Find the probability of selecting first a 5 and then a 9 ?

c) Given that the first card is number 6, what is the probability that the second is number 9 ?

d) What is the probability that both cards selection are numbered over 6 ?

Please show all of your work I am very confused