Quantitative Aptitude - Arithmetic Ability Questions

If a - b = 5 and a2 + b2 = 97, ab = ?

Select the odd number from the given alternatives.

If the interest is compounded half-yearly, then what will be the compound interest (in Rs) on a sum of Rs 10000 for 1 year at the rate of 10% per annum?

Number of circles that can be drawn through three non-colinear points is

In which of the following quadrilaterals opposite angles are supplementary?

Select the odd number from the given alternatives.

The number of diagonals in a hendecagon is

ΔDEF is right angled at E. If cosecD = 5/4, then what is the value of cosecF?