Quantitative Aptitude - Arithmetic Ability Questions

The mean of 10 observations is 17. One more observation is included and the new mean becomes 16. The 11th observation is

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)

In ∆ ABC, the height CD intersects AB at D. The midpoints of AB and BC are P and Q respectively. If AD = 8 cm and CD = 6 cm, then the length of PQ is?

Amit's age is four times the age of Babli. Babli's age is three times the age of Priya. If the present age of Priya is 5 years, what is the present age (in years) of Amit?

Find the 4th proportional to 9, 17 and 27.

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

 In the following question, select the odd letter/letters from the given alternatives.

On a certain principal if the simple interest for two years is Rs 2800 and compound interest for the two years is Rs 2996, what is the rate of Interest?