Quantitative Aptitude - Arithmetic Ability Questions

The areas of two similar triangles ΔABC and ΔPQR are 36 sq cms and 9 sq cms respectively. If PQ = 4 cm then what is the length of AB (in cm)?

X and Y give an exam. Difference of their marks is 45 and the difference of their marks is 15% of the maximum marks. What is the maximum marks for the exam?

2*[­0.3(1.3 + 3.7)] of 0.8 = ?

If x = 1/(√2+1) then the value of x2 + 2x - 1 is

Square of (7 ­- 4x) is

The slopes of two lines are 1/√3 and √3. What is the angle between these two lines?

If cot(A/2) = x, then the value of x is

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