Quantitative Aptitude - Arithmetic Ability Questions

If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then x2 + y2 is equal to

Daily local train ticket costs Rs 30 and Monthly Pass costs Rs 670.8. If I buy the Monthly Pass and travel for 26 days in a month than I save?

x, y and z are real numbers. If x3 + y3 + z3 = 13, x + y + z = 1 and xyz = 1, then what is the value of xy + yz + zx?

Find out the odd word/letters/number pair from the given alternatives

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

What is the value of Sin 30° + Cos 30°?

If cot 135° = x, then the value of x is

What is the value of x4+y4 when the value of x3+y3=8 and x+y=2 ?