Quantitative Aptitude - Arithmetic Ability Questions

The volume of a hemisphere is 19404 cm3. Find its diameter (in cm).

Find the total surface area (in cm2) of a right circular cone of diameter 21 cm and slant height 11 cm.

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 22472, and Rs 23820.32 respectively, what is the rate of interest?

The value of sec2θ + 2tanθcotθ - tan2θ is

If A + B = 90 deg and Cos B = 1/3, then the value of Sin A is

What least number must be added to 213, so that the sum is completely divisible by 9?

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hrs, respectively, the third can drain the cistern, when filled, in 6 hrs. If all the three pipes are opened simultaneously when the cistern is half-full, how many hours will be needed to fill the cistern?