Quantitative Aptitude - Arithmetic Ability Questions

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

If Cot θ = 24/7, then what is the value of Sec θ?

At what rate of compound interest (in %) per annum will a sum of Rs. 15,000 become Rs. 18,150 in 2 years?

There are total 200 students in a school, of which 1/5th are boys. Find the number of girls in the school.

Find the area (in cm2) of a semi-circle of radius 28 cm.

By increasing the price of entry ticket to a fair in the ratio 13:16, the number of visitors to the fair has decreased in the ratio 11:9. In what ratio has the total collection increased or decreased?

What is the reflection of the point (5, 3) in the line y = -2?

The ratio between the area of a square and that of a circle, when the length of a side of the square is equal to that of the diameter of the circle, is (take π=22/7)