What is the probability?
If there s 100 cards and 10 are my cards, how big is my chance to get the right card twice in a row?
If there s 100 cards and 30 are my cards, how big is my chance to get the right card 3 times in a row?
If there s 100 cards and 10 are my cards, how big is my chance to get the right card twice in a row?
If there s 100 cards and 30 are my cards, how big is my chance to get the right card 3 times in a row?
?
Assuming replacement
i) P = 1/100
ii) P = 27/1000
cidyah
P(my card, may card) = (10/100)(9/99) =1/110
P(my card, my card, my card) = (30/100)(29/99)(28/98) = 29/1155