Suppose A[1], A[2], A[3], . . . , A[n] is a one-dimensional array and n ? 50.a. How many elements are in the array?b. How many elements are in the subarrayA[4], A[5], . . . , A[39]?c. If 3 ? m ? n, what is the probability that a randomly chosen array element is in the subarrayA[3], A[4], . . . , A[m]?d. What is the probability that a randomly chosen array element is in the subarray shown below if n = 39?

MATH 103 Chapter 2 Notes Set ollection f objects well defined ● {A} Element - ember of a et ● ∈ ● 1 ∈ A ● 5 ∉ A Sets are esignated by: ● Word description (1st 3 l etters of the alphabet) ● Listing r roster , , c } ● Set builder notation { x | x is the first 3 letters of the alphabet } Empty or ull et ● Ø r { } ● NEVER uses { Ø } Cardinal Number - number of elements in a set (how many) ● If A = { 1, 2, 3, 4 }, then n(A) = 4 (because there are four numbers, or elements, in that set) Finite