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 : (1)
A. 5/64
B. 27/32
C. 5/32
D. 1/2
Answer:C
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 : (1)
A. 5/64 B. 27/32 C. 5/32 D. 1/2