Quantitative Aptitude - Arithmetic Ability Questions

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

The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?

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?

The simple interest on a sum for 5 years is Rs 16800. The rate of interest for the first 3 years is 8% per annum and for the next 2 years is 12% per annum. What is the value (in Rs) of sum?

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

A boy walking at the speed of 4 km/hr covers a certain distance in 6 hours 15 minutes. If he covers the same distance by cycle in 5 hours, then what is the speed (in km/hr) of the cycle?

If 14/3 + (1/2)(x - 7/3) = -2x/3, then the value of x is?

A 8 cm long perpendicular is drawn from the centre of a circle to a 12 cm long chord. The diameter of the circle is