1.
A and B are numbers between 1 and 9. What is ABAB/AB? (AB is a two-digit number and ABAB is a 4-digit number).
2.
V, W, X, Y and Z are numbers between 0 and 9. If XYZ / 15 = WV and V-W=X (WV is a 2 digit number, XYZ is a 3 digit number), which of the following numbers can represent XYZ?
3.
What is the sum of squares of the first two positive odd integers if the sum of squares of the first two positive even integers is X?