Quantitative Aptitude - Arithmetic Ability Questions

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

If a + b = 10 and ab = 24, then the value of a3 + b3 is

ΔPQR is right angled at Q. If tanP = 24/7, then what is the value of cosR ?

If XY = a+23 and YX = 13, then find the value of X2 + Y2X2 - Y2.

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

X attempts 94 questions and gets 141 marks. If for every correct answer 4 marks is given, and for every wrong answer 1 mark is deducted, then the number of questions wrongly answered by X is __.

Find the odd numbers/letters/numbers from the given alternatives.

If x1x2x3 = 4(4 + x1 + x2 + x3 ), then what is the value of [1/(2 + x1 )] + [1/(2 + x2 )] + [1/(2 + x3 )]?