Which of the following is not a type of bank in India?

A company’s expenditure on three departments over four years is as follows (in thousands):

x + y = 4, xy = 2, y + z = 5, yz = 3, z + x = 6 and xz =4, then find the value of x ³  + y ³  + z ³  – 3xyz.

If a – b – c = 0, then the value of (a² + b² + c²)/(b + ac) is:

If  a²+2 = 2a

then find a⁴ - a³ + 2a² -2a+ 9 = ?

If (x - y) = 3, then find the value of (x³ - y³ - 9xy).

Which of the following statements is correct?

I. If x = 12, y = –2 and z = –10, then x³ + y³

+ z³ = 720

If 2x + (1/9x) = 5, then find the value of 81x² + (1/4x²) - (1785/4)

If x = 15

find x ⁵ - 16 x ⁴ + 16 x ³ - 16 x ² + 16 x  - 16 = ?