Quantitative Aptitude - Arithmetic Ability Questions

When [x + (1/x)] = 5, then what is the value of [x – (1/x)]?

Rearrange the jumbled up letters in their natural sequence and find the odd one out.

The average age of 40 students of a class is 16 years. If the average age of 24 students is 15.5 years and that of the 15 students is 16 2⁄3 years, then the age of 40th student is

A can do a work in 24 days and B in 40 days. If they work on it together for 10 days, then what fraction of work is left?

If the age of Rahul is 5 years more than his friend Ajay's age and the age of Rahul's wife is 6 years less than Rahul, and Ajay's wife is 1 year older than Rahul's wife, then which of the following statements is true?

If sinθ+ cosecθ=2, then the value of sin-7∅+cosec7∅ is

A circle and a square have same area. The ratio of the side of the square to the radius of the circle will be:

Find the radius of the circle if the length of its arc is 33 cm whose corresponding central angle is 90° ?