Quantitative Aptitude - Arithmetic Ability Questions

A polygon has 9 sides. What is its interior angle?

Three numbers are given in which the second is triple the first and is also double the third. If the average of the three numbers is 66. Find the first number.

What is the sum of the measures of all the interior angles of a regular polygon of 6 sides?

The smallest of the fractions among 5/8, 3/4, 13/16, 7/12 is ___.

How many solutions does a pair of linear equations will have, if the equations are 4x+5y-6=0 and 16x+20y+20=0?

The value of cos0 deg is

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?

Factors of  x2 + 7x + 10 are