Quantitative Aptitude - Arithmetic Ability Questions

What is the reflection of the point (2, 3) in the line y = 4?

If x1x2x3 = 4(4 + x1 + x2 + x3 ), then what is the value of [1/(2 + x1 )] + [1/(2 + x2 )] + [1/(2 + x3 )]?

ΔPQR is right angled at Q. If tanP = 24/7, then what is the value of cosR ?

What is the value of (cot60 + 1/√3) ?

In ΔPQR, PS and PT are bisectors of ∠QPR and ∠QPS respectively. If ∠QPT = 30°, PT = 9 cm and TR = 15 cm, then what is the area (in cm2) of ΔPTR

If in 2 years at simple interest the principal increases by 18%, what will be the compound interest (in Rs) earned on Rs 7000 in 3 years at the same rate?

The mean score in a test of the 10 boys in a class was 15 while the overall mean of the 25 students in the class was 16.2. What was the mean score of the girls?

The area of a semicircle is 1925 sq.cm. Calculate its perimeter (in cm).