Quantitative Aptitude - Arithmetic Ability Questions

If x+1x = 4, then what is the value of x6+1x6 ?

The average age of 30 boys in a class is 10 years. If the age of their teacher is also included, the average increases by one year. The teacher's age in years 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?

Which of the following numbers is a perfect square?

Ramesh uses a weight of 930 gm instead of 1 kg and sells sugar on its cost price. What will be his profit percentage on selling 15 kg sugar?

A sphere of radius 5 cm is melted to form a cone with base of same radius. The height (in cm) of the cone is

If x + y = 3, then what is the value of x3 + y3 + 9xy?

What is the third proportional to 10 and 20?