In how many T 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. Answers
A) T=288	B) T=144	C) T=12	D) 48	E) 96
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= 
<gadget id="calculator">24 * 6</gadget>
<output>144</output>
144   Answer T=144
<result>B</result>
In how many T 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.