Quantitative Aptitude - Arithmetic Ability Questions

If rsin∅ =1, rcos∅=√3, then the value of r2tan∅ is

The ratio of present ages of Anil and Aakash is 4 : 5. Three years later their ages will be in ratio 7 : 8. What is the present age (in years) of Anil?

From the circumcentre I of the triangle ABC, perpendicular ID is drawn on BC. If ∠BAC = 60°, then the value of ∠BID is

A missile travels at 1440 km/h. How many metres does it travel in one second?

If a -­ b = 3 and ab =28, then a3 - b3 is

Find out the odd word/letters/number/number pair from the given alternatives.

If a + b + c = 9, ab + bc + ca = 26, a3 + b3 = 91, b3 + c3 = 72 and c3 + a3 = 35, then what is the value of abc?

Which one of the following is an irrational number?