1.
X, Y and Z are three positive prime integers. What is the value of Y? (1) The product XYZ is divisible by 4. (2) X is an odd number.
2.
Is 12x + 2 = 10 + 3x? (1) 5x is smaller than or equal to 12 (2) 2x is greater than or equal to 4
3.
Is 22Y = 10 + 7Y? (1) -5Y is greater than or equal to -10. (2) -6Y is smaller than or equal to -6.