(a) Without replacement: 5/11 * 4/10 = 20/110 = 2/11
(b) Without replacement: 5/11
(c) Without replacement: 10/11
A bag contains 6 red balls and 5 black balls,2 balls are picked,one after the other,find the probability that
(a) both are black
(b) the first is black
(c) both are the same colour
Given that
(1) it is without replacement
(2) it is with replacement
1 answer
2 answers