Question
There are two urns . Urn contains 5 red, 3 blue and 2 white balls, urn contains 4 red, 3 blue, and 3 white balls. An urn is chosen at random and a ball is drawn. Probability that ball drawn is red is a. b. c. d.



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Question 1
A box contains green and yellow balls. If balls are randomly drawn, one-by-one, with replacement, then the variance of the number of green balls drawn is: Question 2
In a certain college, 4% of boys and 1% of girls are taller than 1.75 metres. Furthermore, 60% of the students in the college are girls. A student is selected at random from the college and is found to be taller than 1.75 metres. Find the probability that the selected student is a girl.

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Question Text | There are two urns . Urn contains 5 red, 3 blue and 2 white balls, urn contains 4 red, 3 blue, and 3 white balls. An urn is chosen at random and a ball is drawn. Probability that ball drawn is red is a. b. c. d. |