Quantitative Aptitude - Arithmetic Ability Questions

O is the center of the circle and two tangents are drawn from a point P to this circle at points A and B. If ∠AOP = 50°, then what is the value (in degrees) of ∠APB?

A cylindrical vessel of radius 8 cm is partially filled with water. By how much will the water level rise if a sphere of radius 7 cm is completely immersed in this water?

After buying a toy for Rs. 66, Raghu managed to sell it at a profit of 15%. The selling price of the toy was

What is the ratio of simple interest earned on certain amount at the rate of 12% p.a. for 9 years and that for 12 years?

Find the perimeter (in cm) of a semicircle of radius 14 cm.

Two tangents PA and PB are drawn to a circle of centre O in such a way that angle AOB = 120 deg. Calculate the value of angle APB.

The average age of 27 students of a class is 22. If the age of the teacher is also added to their ages, then the average increases by one. Find the age of the teacher.

The sum of 15 observations of a data is (434 + x). If the mean of the data is x, then the value of x is