Quantitative Aptitude - Arithmetic Ability Questions

The number of diagonals in a hendecagon is

If tanA = x, then x is

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

If a = 5, b = 4, c = 8 then find the value of (a3 + b3 + c3 - 3abc)/(ab + bc + ca - a2 - b2 - c2)

The length of the diagonal and the breadth of a rectangle are 17 cm and 8 cm respectively. Find its perimeter (in cm).

Δ XYZ is right angled at Y. If m∠Z = 30°. What is the length of YZ (in cm), if ZX = 9 cm?

The age of A is three times the age of B. What is the ratio of the age of B to the age of A?

In the series 5442673314884743581,the number of 4s that are completely divisible by the number on their right but not divisible by the number on their left is