From a group of fourteen male and fourteen female tennis players, two men and two women are to face each other in a men-versus-women doubles match. In how many different ways can this match be arranged? ways

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p. mc) knowing that it is going to rain tomorrow, and going to bed before 9 p. md) knowing that you have a test in school tomorrow, and studying thw night before