A cuboidal block of 8 cm x 12 cm x 20 cm is cut into an exact number of equal cubes. What will be the least possible number of equal cubes?
The sum of x% of y and y% of z is z% of x. x and y are integers such that 1 = < x = < 9, 1 = < z = < 9. If y is a perfect square number then how many ordered pair ( x , z ) are possible satisfying the given condition.
Given positive real numbers x, y, and z that satisfy the following system of equations: x² + xy + y² = 9, y² + yz + z² = 4, z² + zx + x² = 1,
Find x + y + z
