(a(i))[1]
Find the probability that the chosen card displays the letter H.
(a(ii))[1]
Find the probability that the chosen card displays the letter B.
(b)[2]
Find the probability that both cards display the letter I.
(c(i))[3]
Find the probability that one card shows the letter I and the other card shows the letter N.
(c(ii))[3]
Find the probability that the two cards display different letters.
(d)[2]
Find the value of $n$.