Quantitative Aptitude - Arithmetic Ability Questions

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

What is the area (in sq cm) of a rectangle if its diagonal is 25 cm and one of its sides is 24 cm?

If p = 99, then the value of p(p2+3p+3) will be

A train crosses a 550 m long platform in 36 seconds. How long was the train if it was travelling at the speed of 70 kmph?

In what time will a 100 metre long train running with a speed of 50 km/hr cross a pillar?

The percentage change of a number when it is first decreased by 10% and then increased by 10% is

If Mr. Raghav taught a total of 500 hours, then what is the difference in number of hours of teaching algebra and modern Maths?

Find the mean value of 2, 3, 3, 4, 6, 7