A retailer sells two styles of high-priced digital video recorders (DVR) that experience indicates are in equal

Question:

A retailer sells two styles of high-priced digital video recorders (DVR) that experience indicates are in equal demand. (Fifty percent of all potential customers prefer style 1, and 50% favor style 2.) If the retailer four of each, what is the probability that the first four customers seeking a DVR all purchase the same style? Stocks
Stocks or shares are generally equity instruments that provide the largest source of raising funds in any public or private listed company's. The instruments are issued on a stock exchange from where a large number of general public who are willing...