Find the probability that a hand of 7 cards drawn from a well shuffled deck of 52 cards contain exactly three kings.
Find the probability that a hand of 7 cards drawn from a well shuffled deck of 52 cards contain at least 3 kings.
7 cards are drawn from a well shuffled deck of 52 cards. The number of points in sample space S = n(S) =
Event A: at least 3 kings are drawn. Either 3 kings are drawn or 4 kings are drawn.
n(A) =
Hence,
[∵ By using parts (i) and (ii)]
=
Find the probability that a hand of 7 cards drawn from a well shuffled deck of 52 cards contain at most 3 kings.
(i) a five rupees coin. (ii) a two rupees coin.
(iii) a two rupees or a five rupees coin. (iv) not a one rupee coin,
(v) not a five rupees coin. (vi) a one rupee or two rupees coin.