7 white balls and 3 black balls are kept randomly in order. Find the probability that no two adjacent balls are black.

7white balls and 3black balls are kept randomly in order.Find the probability that no two adjacent balls are black.

Seven white balls and three black balls are randomly placed in a row. IF the parabability that no two black balls are placed adjacently, equals (7/a), then the value of "a" is

Seven white balls and three black balls are randomly arranged in a row. The probability that no two black balls are placed adjacently is

Seven white balls and three black balls are randomly placed in a row. The probability that no two black balls are placed adjacently equals

Seven white balls and three black balls are randomly placed in a row. What is the probability that no two black balls are placed adjecently ?

Seven white balls and three black balls are randomly placed in a row. The probability that no two black balls are placed adjacently equals a. 1//2 b. 7//15 c. 2//15 d. 1/3

Ther are 10 black and 8 white balls in a bag. Two balls are drawn without replacement. Find the probability that: (i) both balls are black (ii) first ball is black and second is white (iii) one ball is black and other is white.

There are 10 black and 8 white balls in a bag. Two balls are drawn without replacement. Find the probability that: (i) both balls are black (ii) first ball is black and second is white (iii) one ball is black and other is white.