If 0.232323... = p/q and 0.23333... = r/s, both in their lowest terms, then the value of p + q + r + s is:

If x + (1/y) = 1 and y + (1/z) = 1, then the value of z + (1/x) is

If 2ˣ × 3ʸ = 12 and 2ʸ × 3ˣ = 18, then the value of x + y is :

If a - b = 4 and ab = 12, what is the value of a² + b²?

If x + (1/x) = 3, then the value of x³ + (1/x³) is :

If x³ = (9³ × 6³) / 8, x > 0, then what is the value of x?