Final answer:
The count of fraternities and sororities at WSU would need current information from the university's resources. The growth of Greek life has historically been part of the expansion of colleges in the early 20th century. Without exact data, probabilities about student living arrangements and financial aid cannot be determined.
Step-by-step explanation:
The question regarding the number of residential fraternities, residential and multicultural fraternities/sororities at WSU (Washington State University) is related to the culture and systems within higher education institutions. While the exact number can vary over time, as per the options provided - A) 30 B) 40 C) 50 D) None of the above - the answer would depend on the most current data from WSU. For an accurate and up-to-date count, it would be best to consult the university's Greek life office or their official website.
Historically, the growth of fraternities and sororities has been significant. At the turn of the 20th century, colleges saw rapid growth in enrollment, leading to more student housing and the proliferation of Greek life. However, to determine the probability of student lifestyles such as living arrangements and financial aid status without specific data cannot be precise, hence questions like 'the probability that a randomly chosen student does not live within five miles of the campus,' or 'are living in student housing and receiving financial aid mutually exclusive' would typically be answered with 'Cannot be determined' unless specific contextual data is provided.