Quantitative Aptitude - Arithmetic Ability Questions

What is the area (in sq cm) of a circle whose circumference is 26.4 cm?

In a committee there are 15 members. If two members whose ages are 45 years and 55 years are replaced by the two new members, then average age of 15 members is increased by 2 years. What is the average age (in years) of the new members?

If p3 - q3 = (p - q) ( (p - q)2 + x p q ) then value of x is

What is the sum of the first 9 terms of an arithmetic progression if the first term is 7 and last term is 55?

A man covers a total distance of 100 km on bicycle. For the first 2 hours, the speed was 20 km/hr and for the rest of the journey, it came down to 10 km/hr. The average speed will be

An angle is smaller than its supplementary angle by 50°. What is the measure of the angle?

What is the value of Sin 60° + (1/2)Cosec 45°?

XYZ is a right angled triangle and ∠Y = 90°. If XY = 2.5 cm and YZ = 6 cm then the circumradius of ∆XYZ is