Suhel Bhojwani
9y ago
Q.99 , Probability , how result came to 95/663, 2 cards are taken from a pack of 52 cards , what is probability that none of these cards are black or face cards ???? Plz reply
Sign in
Please select an account to continue using cracku.in
↓ →
Suhel Bhojwani
9y ago
Q.99 , Probability , how result came to 95/663, 2 cards are taken from a pack of 52 cards , what is probability that none of these cards are black or face cards ???? Plz reply
Vipul Vaibhav 9y ago
I am not wrong then the number of face cards (12) plus black cards (13) combined is 22. Then two cases arise with replacement or without replacement for
1st case that is with replacement:-
p = (22/52)*(22/52) = 121/676
2nd case without replacement:-
p = (22/52)*(21/51) = 77/442
So i guess the answer given bye you is wrong ,, please correct me if i am wrong or you need any further clarification
sujit 9y ago
total number of black card =26
total number of red cad without face card=20(26-6)
hence,probability of finding non black card along with face card =20C2/52 C 2
rohith 9y ago
how did you got black cards 13 ?
GAURAV KAMAL 9y ago
How did you GET and not GOT. just for ur help.
Educational materials for CAT preparation