Quantitative Aptitude - Arithmetic Ability Questions

If the radius of a circle is increased by 17% its area increases by ______.

If Sin θ = 20/29, then what is the value of Cos θ?

What is the value of  4cos90-A sin390+A - 4sin90+A cos390-Acos180+8A2 ?

There were 42 students in a hostel. Due to the admission of 13 new students, the expenses of the mess increase by Rs. 30 per day while the average expenditure per head diminished by Rs. 3. What was the original expenditure of the mess ?

70% of the cost price of a article is equal to the 40% of its selling price. What is the profit or loss percentage?

How many job applicants had applied if the ratio of selected to unselected was 19:17. If 1,200 less had applied and 800 less selected, then the ratio of selected to unselected would have been 1:1.

In math questions answers each questions are solved with explanation. The questions are based from different topics. Care has been taken to solve the questions in such a way that students can understand each and every step

1. Which is greater than 4?

(a) 5,

(b) -5,

(c) -1/2,

(d) -25.                                             

PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If ∠QSR = 30°, then what is the value (in degrees)of POR?