In how many W ways can 4 white and 3 black chess pieces be arranged in a row such that they occupy ...
In how many W ways can 4 white and 3 black chess pieces be arranged in a row such that they occupy alternate places? Assume that the pieces are distinct.
Answer/Solution
W=144
Steps/Work
4 white chess pieces can be arranged in 4! ways and 4 black pieces can be arranged in 3 ! ways.
W_W_W_W
Number of ways = 4!*3! = 24 * 6 = 144
Answer B
W_W_W_W
Number of ways = 4!*3! = 24 * 6 = 144
Answer B