Quantitative Aptitude - Arithmetic Ability Questions

A non-zero number is greater than 7 times its reciprocal by 9.3. What is the number?

For the data given below. find the sum of mode. median and mean.6, 3, 8, 4, 3, 11, 7, 4, 5, 4.

The angles of depression of two ships from the top of a light house are 45° and 30° toward east. If the ships are 200m apart, the height of the light house is (take √3=1.73)

4 hrs after a goods train passed a station, another train travelling at a speed of 60 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 8 hours. What is the speed of the goods train?

The addition of a rational number and its reciprocal is 61/30. Calculate the number.

A and B together can do a piece of work in 36 days, B and C together can do it in 24 days. A and C together can do it in 18 days. The three working together can finish the work in

Anuj runs 1 2/3 laps of 7 laps race, find the remaining laps to be run.

If a -­ b = 6 and ab =16, then a3 -­ b3 is