Key Words MCQs 1. Subtracting 6 from a certain number gives the result 7 less than twice of that number. What’s the number? (a) 1          (b) ½ (c) 5          (d) 6 2. Four times the first of three consecutive even integers is 3 more than twice the third. What is the third integer? (a) 9    …

Variable and Constant A characteristic that varies with an individual or an object is called variable. For example, age is a variable as it changes from person to person. A variable can assume a number of values. A characteristic that does not vary with an individual or an object is called constant. Primary and Secondary Data The data published or …

Questions 1-6: Seven airline flights — 101,102,103,104,105,106 and 107 — are to be scheduled for departure, one at a time on the hour, from 9:00 a.m. until 3:00 p.m. The schedule must conform to the following requirements: A. Flight 101 must depart at 9:00 a.m. B. Flight 105 must depart later than Flight 103, and also later than Flight 102. …