Quantitative Aptitude - Arithmetic Ability Questions

What is the quotient when 7251 is divided by 66?

A spherical glass vessel has a cylindrical neck 7 cm long and 4 cm in diameter. The diameter of the spherical part is 21 cm. Find the quantity of water it can hold.

X and Y are two alloys which are prepared by mixing zinc and aluminium in the ratio of 1 : 4 and 11 : 8 respectively. If equal quantities of alloys are melted to form a third alloy Z then what is the ratio of zinc and aluminium in alloy Z?

What is the reflection of the point (4, 7) in the line y = -1?

If cos -225° = x, then the value of x is

If tan2A + cot2A + 2 = x, then the value of x is

If (1 + cosA)/(1 - cosA) = x, then x is

Select the odd word/letters/number/number pair from the given alternatives.