Quantitative Aptitude - Arithmetic Ability Questions

What least number must be added to 213, so that the sum is completely divisible by 9?

An equilateral triangle has sides of 10 cm each. Find the ratio of in-radius to the circum-radius of the triangle.

If 5x + 4(1 -­ x) > 3x - ­4 > 5x/3 -­ x/3; then x can take which of the following values?

If [4(2x/5 - 3/2)]/3 + 7/5 = 37/5, then what is the value of x?

The length of one side of a rhombus is 41 cm and its area is 720 sq.cm. What is the sum of the lengths of its diagonals?

The curved surface area and the slant height of a right circular cone are 858 cm² and 13 cm respectively. Find its diameter (in cm).

4 men can build a small house in 12 days. How long would it take for 6 men to build the same house?

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?