Quantitative Aptitude - Arithmetic Ability Questions

Find the curved surface area (in cm2) of a hemisphere of diameter 7 cm.

The total surface area of a cube is 337.5 cm². Find its side (in cm).

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.

In a triangle ABC, a line is drawn from C which bisects AB at point D. Find the ratio of area of the triangles DBC and ABC.

The rate of simple interest per annum at which a sum of money double itself in 162⁄3 yrs. is

Two circles touch each other internally. The radius of the larger circle is 6 cm and the distance between the centre is 2 cm, then the radius (in cms) of the other circle is

The average of 10 numbers is 30. If at the time of calculation one number was wrongly taken as 36 instead of 69, then what will be the correct average?

What would be the compound interest of Rs. 25000 for 2 yrs. at 5% per annum?