Quantitative Aptitude - Arithmetic Ability Questions

One of four words is a class to which the other three belong. Identify the class.

The mean of a distribution is 21 and the standard deviation is 7. What is the value of the coefficient variation?

Find the odd words/letter/number from the given alternatives:

If 5x - ­5(3x ­- 2) < 4x -­ 1 < 2 + 2x, then x can take which of the following values?

The mean of marks secured by 35 students in division A of class X is 65, 45 students of division B is 61 and that of 70 students of division C is 59. What is the mean of marks of the students of three divisions of Class X?

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

If curved surface area of a cylinder is 616 sq cm and height is 14 cm, find its radius?