Quantitative Aptitude - Arithmetic Ability Questions

The number of diagonals in a hendecagon is

If tanA = x, then x is

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

A sum of Rs 4000 becomes Rs 5800 in 3 years, when invested in a scheme of simple interest. If the same sum is invested in a scheme of compound interest with same yearly interest rate (compounding of interest is done yearly), then what will be the amount (in Rs) after 2 years?

The compound interest on Rs. 64,000 for 3 years, compounded annually at 7.5% p.a. is Rs. 64,000

At least one pair of opposite angles is congruent in a _____.

Three angles of a quadrilateral are 60°,90°and 100°. Then the fourth angle of the quadrilateral is

Dodecahedron has 30 edges. How many vertices does it have?