Quantitative Aptitude - Arithmetic Ability Questions

Rs. 10000 is being compounded at 20% per annum. Calculate the amount after 2 years if rate of interest is charged half yearly.

If 3cos2x - 2sin2x = -0.75 and 0°⩽ x ⩽ 90°, then x = ?

In which quadrant, will the point (4, -2) be located?

How many three digit whole numbers are there between 75 and 405?

How many diagonals are there in octagon?

Simplify 50 + 18 - 8

Out of two numbers, 30% of the smaller number is equal to 18% of the larger number. If the sum of the two numbers is 840, then what is the value of the larger number?

Which one does not belong to the group?