Quantitative Aptitude - Arithmetic Ability Questions

If  2x+14x = 1, then the value of  x2+164x2is

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?

In 3 years Rs 3000 amounts to Rs 3993 at x% compound interest, compounded annually. The value of x is

The lengths of the two diagonals of a rhombus are 8 cm and 15 cm respectively. Find its area (in cm²).

If sin ­-330° = x, then the value of x is

2 ­- (cosA + sinA)2 is equal to

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

Find the missing digit if it has 11 and 13 as factors?