Question

Exactly one marble in a bag of 100 marbles of equal sizes is red. If two marbles are to be removed one after the other, the probabilities P1 and P2 of the first drawn marble and the second drawn marble being red respectively are

(A)P1= 1/100, P2 =1/99
(B)P1= 1/100, P2 =0
(C)P1= 1/100, P2 =1/100
(D) P1= 1/100, P2 =1/98​

Answer 1

Answer:

(A) P1 = 1/100, P2 = 1/99

Explanation-

number of marbles present during player one selects a marble =

100

therefore the chances of player one to get a correct one is 1/100

number of marbles present during player two selects a marble =

99

therefore the chances of player two to get a correct one is 1/99