Quantitative Aptitude - Arithmetic Ability Questions

If θ is acute angle and sin(θ+18°)= 1/2, then the value of θ in circular measure is

In ∆ABC, ∡A + ∡B = 75 and ∡B + ∡C = 140, then ∡B =

What is the quotient when 7251 is divided by 66?

The sum of digits of a two-digit number is 9. When the digits are reversed, the number decreases by 45. Find the changed number.

A pipe can fill a sump with water in 2 hours. Because of a leak, it took 2 2/3 hrs to fill the sump. The leak can drain all the water of the sump in

By selling a used phone for Rs.6,160 Rajan got 44% less than what it cost him to buy it a few years ago. At what price should Rajan have been able to sell it to make a profit of 5%?

(secA - 1)/(secA + 1) is equal to?

What is the perimeter of the sector whose central angle is 60° and radius of the circle is 21 cm?