A box contains `15` green and `10` yellow balls. If `10` balls are randomly drawn, one-by-one, with replacement, then the variance of the number of green balls drawn is : (a) `12/5` (b) `6` (c) `4` (d) `6/25`

A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one-nyne, with replacement, then the variance of the number of green balls drawn is

A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one-by-one, with replacement, then the variance of number of yellow balls drawn is :

A box contains 15 green and 10 yellow balls.If 10 blace are randomly drawn,one-by-one,with replacement,then the variance of the number of green balls drawn is: (1)4(2)(6)/(25) (3) (12)/(5) (4) 6

A box contains 3 green and 5 white balls. Three balls are drawn from it one after the other with replacement. Find probability distribution of the number of green balls.

A bag contains 7 green,4 white and 5 red balls.If four balls are drawn one by one with replacement,what is the probability that one is red?

A bag contains 7 green, 4 white and 5 red balls. If four balls are drawn one by one with replacement, what is the probability that one is red?

A bag contains 5 red, 7 green and 4 white balls. 3 balls are drawn one after another without replacement. Find the probability that out of 3 balls, one is white and 2 is green.

A bag contains 4 green and 6 white balls. Two balls are drawn one by one without replacement. If the second ball drawn is white, what is the probability that the first ball drawn is also white ?

An urn contains 3 white and 6 red balls. 4 balls are drawn one by one with replacement from the urn.Find the probability distribution of the number of red balls drawn. Also find mean and variance of the distribution.