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10.  The President of the Russian Federation who ordered the invasion of Ukraine is: A.  Joseph Stalin B.  Vladimir Putin C.  Leonid Brezhnev D. Alexander Cheyenko

15.    Which of these is true when the professor re-evaluates a grade (or score) contested by a student?  A.   The grade may remain the same B.   The grade may be raised C.  The grade may be lowered D.  All of the above  

The instructor will post my final grade for the course on Self-service   A.   True    B.    False

9.   If I have a question for the professor concerning the course, what should I do? A.   Just pick up the phone and call the professor or email the question to him B.   First, refer to the syllabus C.   Next, refer to previous announcements D.   Then email or call the professor as a last resort E.   B, C, D

22.  Which of these is true? A. The instructor must remind the students when the exams, tests, and papers are due. B.  Students in this class are supposed to constantly check the syllabus to know and remind themselves when exams, tests, and papers are due  C.  My group leader is supposed to remind me (a student) when the exams, tests, papers are due D.  None of the above

Complete the blank with either ∈ or ∉ to make the statement true.-8 _____{8, 10, 12, …, 20}

If s varies directly as t2, and when find s when t is 5.

Find the Cartesian product.A = {5, 3, 9, 8}B = {0, 1}Find B × A.

The following Java method was designed to output the reversal of the input String s:public static String reverseString(String s) {  if (s==null || s.length()

What is the output of the following code?public class Exam { public static void main (String[] args) { double[] arr = new double[5]; try { arr[2] = 0.0; int x = 3 / (int)arr[3]; System.out.println(“abc”); } catch (Exception e) { System.out.println(“x=”); } }}