Quantitative Aptitude - Arithmetic Ability Questions

At what rate of compound interest per annum will a sum of Rs 20000 become Rs 25088 in 2 years?

The lengths of the two diagonals of a rhombus are 5 cm and 12 cm. Find its area (in cm2)

In triangle PQR, the sides PQ and PR are produced to A and B respectively. The bisectors of ∠AQR and ∠BRQ intersect at point O. If ∠QOR = 50°, then what is the value (in degrees) of ∠QPR?

The mean of 12 observations is 15. One more observation is included and the new mean becomes 16. The 13th observation is

If the shopkeeper sells an item at Rs 450 which is marked as Rs 600, then what is the discount he is offering?

What is the value of Tan 45° - 1/√3 Sec 60°?

If x = 313- 3-13, then 3x2 + 9xis equal to

What is the reflection of the point (6, -3) in the line y = 2?