If a/h + y/b = 1 and b/y + z/c = 1, then h/a + c/z will be equal to -

If ω (ω ≠ 1) be a cube root of unity and (ω + 1)^8 = a + bω, then a.b equals

If x² + 1/x² = 51, then (x − 1/x) is equal to

If x^3 – y^3 = 117/8 and x – y = 3/2 then the value of x^2 + xy + y^2 will be

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

If 1² + 2² + 3² + ... + 10² = 385, then 3² + 6² + 9² + ... + 30² is equal to: