Question 1: If a, b and c are odd integers, which of the following expressions must be an even integer? a + b + c ab + bc + ca a(b + c) a(b + c - 1) (a - 2)bc Question 2: Rectangle ABCD below has AB = 4, AD = 6 and triangle EBC is isosceles, EB = EC. What is the perimeter of triangle EDC? 9 10 12 13 15 Question 3: In the x,y plane, find the y-intercept of a line with slope equal to -2 and that passes through the point (3,2). 6.5 7 8 8.5 9.5 Question 4: If it takes John 6 days to paint the apartments of a building and it takes Kevin 8 days to do the same job, how long would it take to do the job if both painters worked simultaneously? 24/7 days 18/7 days 48/7 days 30/7 days 32/7 days Question 5: For any x ≠ 0 and x ≠ 1, (x^{2} + 4x - 5)/(x^{2} - x) = x - 5 4 - x x + 5/x 1 + 5/x 3x - 4 Question 6: How many committees of 4 students can be selected from a group of 7 students? 35 40 46 52 90 Press the Submit button to see the results.