Quantitative Aptitude - Arithmetic Ability Questions

If a+1a=2 then the vealue of a5+1a5 will be

The average revenues of 11 consecutive years of a company is Rs 77 lakhs. If the average of first 6 years is Rs 72 lakhs and that of last 6 years is Rs 84 lakhs, What is the revenue for the Sixth year.

Both X and Y together can complete a work in 12 days and Y alone can complete the same work in 30 days. In how many days will X alone complete the work?

If sec -7π/4 = x, then the value of x is

What is the value of sinAtanA/(1 - cosA)?

What is the value of (cos45° + 1/3) ?

The ratio between the area of a square and that of a circle, when the length of a side of the square is equal to that of the diameter of the circle, is (take π=22/7)

If the sum of the measures of all the interior angles of polygon is 2340°. What is the number of sides of the polygon?