Quantitative Aptitude - Arithmetic Ability Questions

Which of the following is NOT prime number?

Average of 31 numbers is 19. If the average of first 8 numbers is 24, then what is the average of the remaining numbers?

A hollow hemispherical bowl is made of silver with its outer radius 8 cm and inner radius 4 cm respectively. The bowl is melted to form a solid right circular cone of radius 8 cm. The height of the cone formed is

If A alone can do a job in 40 days then, in how many days can B alone do the job if together they can do the job in 8 days?

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

An angle is thrice its complementary angle. What is the measure of the angle?

Volume of a cube is 512 cubic cm, find its total surface area? (Take π = 22/7)

A student, by mistake, wrote 64 in place of 46 as a number at the time of finding the average of 10 given numbers & got the average as 50. The correct average of the numbers is