Quantitative Aptitude - Arithmetic Ability Questions

If x = a + 1a, y = a - 1a ,(a>0), then the value of x4+y4-2x2y2 is

What are the co­ordinates of the centroid of a triangle, whose vertices are A(­2,­5), B(4,­4) and C(7,3)?

If the difference between the measures of the two smaller angles of a right angled triangle is 8°, then the smallest angle is

The perimeter and the breadth of a rectangle are 44 cm and 10 cm respectively. Find its area (in cm2).

The area of a triangle ABC is 63 sq.units. Two parallel lines DE, FG, are drawn such that they divide the line segments AB and AC into three equal parts. What is the area of the quadrilateral DEGF?

Which of the following is the largest number among 2, 33, 4, 53

The mean of marks secured by 45 students in division A of class X is 56, 40 students of division B is 52 and that of 40 students of division C is 50. Find the mean of marks of the students of three divisions of Class X.

If a chord of a circle subtends an angle of 30° at the circumference of the circle, then what is the ratio of the radius of the circle and the length of the chord respectively?