Question

How many ways are there to assign 8 visiting different studetns to one Stony Brook summer course, chossing from Calculus I, Linear Algebra or Basketweaving, if each course must have at least one students from Iceland?

Answer 1

56 ways

Explanation:

Number of ways is given by n combination r (n!/(n - r)!r!)

n = total number of students = 8, r = the number of summer courses = 3

Number of ways = 8 combination 3 = 8!/(8-3)!3! = 8!/5!3! = 8×7×6×5!/5!×6 = 8×7 = 56 ways