Quantitative Aptitude - Arithmetic Ability Questions

Select the odd letters from the given alternatives.

If √(1 - cos2A) = x, then the value of x is

If 31x + 31y = 403, then what is the average of x and y?

If x = 1.1, then what is the value of 4x2 -4x + 1 ?

PQ is a tangent to the circle at T. If TR = TS where R and S are points on the circle and ∠RST = 65°, the ∠PTS =

The value of 16 - [5 - 2{14 of 2 - (8 ÷ 4 x 2 - 1 + 3}] is

The marked price of an article is Rs 2400. It is sold at two successive discounts of 10% and 15%. What is the selling price (in Rs) of the article?

If the speed of a boat in still water is 20 km/hr and the speed of the current is 5 km/hr, then the time taken by the boat to travel 100 km with the current is