An urn contains three red balls and
white balls. Mr. 
draws two balls together from the urn. The probability that they have the same colour is 1/2. Mr. 
draws one balls from the urn, note its colour and replaces it. He then draws a second ball from the urn and finds that both balls have the same colour is: 5/8.The possible value of 
is
An urn contains three red balls and white balls. Mr. draws two balls together from the urn. The probability that they have the same colour is 1/2. Mr. draws one balls from the urn, note its colour and replaces it. He then draws a second ball from the urn and finds that both balls have the same colour is: 5/8.The possible value of is
Question ID - 153500 | SaraNextGen Top Answer
An urn contains three red balls and white balls. Mr. draws two balls together from the urn. The probability that they have the same colour is 1/2. Mr. draws one balls from the urn, note its colour and replaces it. He then draws a second ball from the urn and finds that both balls have the same colour is: 5/8.The possible value of is
|
An urn contains three red balls and |
|
(1) There are
Also required probability for Mr.
Solving, we get From (1) and (2), |
white balls in the turn
Probability of Mr. A to draw two balls of same colour is
(given)
or 6 (1)
according to the question is
(given)
or 9 (2)