A box contains 24 identical balls of which 12 are white and 12 are black. The balls are drawn at random from the box one at a time with replacement. The probability that a white ball is drawn for the 4th time on the 7th draw is (a) `5/64` (b) `27/32` (c) `5/32` (d) `1/2`

A box contains 24 identical balls of which 12 are white and 12 are black.The balls are drawn at random from the box one at a time with replacement.The probability that a white ball is drawn for the 4 th time on the 7 th draw is (a) (5)/(64) (b) (27)/(32) (c) (5)/(32) (d) (1)/(2)

A box contains 20 identical balls of which 10 are blue and 10 are green. The balls are drawn at random from the box one at a time with replacement. The probability that a blue ball is drawn 4th time on the 7th draw is

A box contains 3 orange balls, 3 green balls and 2 blue balls. Three balls are drawn at random from the box without replacement. The probability of drawing 2 green balls an one blue ball is

There are 12 white and 12 red ball in a bag. Balls are drawn one by one with replacement from the bag. The probability that 7th drawn ball is 4th white, is

A box contains 10 white,6 red and 10 black balls.A ball is drawn at random from the box. What is the probability that the ball drawn is either white or red?

A box contains 4 red and 8 white balls. If 4 balls are drawn one by one with replacement then the probability of getting 3 white balls is

A bag contains 6 white and 4 black balls.Two balls are drawn at random and one is found to be white.The probability that the other ball is also white is

A bag contains 4 white,3 black,2 red balls.Balls are drawn from the bag one by one without replacement.The probability that 5^( the) balls is black given that 4^( th) ball is red,is