Quantitative Aptitude - Arithmetic Ability Questions

A water tank has two holes. The 1st hole alone makes the tank empty in 3 min and 2nd hole alone makes the tank empty in 5 min. If water leaks out at a constant rate, how long in minutes does it take if both the holes together empty the tank?

Find the total surface area (in cm²) of a right circular cone of diameter 14 cm and slant height 10 cm.

Select the option that is different from the remaining three alternatives.

In the following question, select the odd word pair from the given alternatives.

If the sum of a number and its reciprocal be 2, then the number is

In ΔDEF, G and H are points on side DE and DF respectively. GH is parallel to EF. If G divides DE in the ratio 3:2 and HF is 8 cm, then the length of DF is

If 60 boys can finish a work in 15 days by working 8 hours a day, then how many hours a day should 72 boys work to finish that work within 20 days?

What is the sum of the measures of all the interior angles of a regular polygon of 9 sides?