Quantitative Aptitude - Arithmetic Ability Questions

The standard deviation of the set {10, 11, 12, 9, 8} is

An angle is thrice its complementary angle. What is the measure of the angle?

The distance between the points (11,­5) and (k,0) is 13. Find k.

In the given series, how many 8s are there that are not divisible by the number to its left but completely divisible by the number to its right.

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The average weight of 3 men A, B and C is 84 Kg. Another man D joins the group and the average now becomes 80 Kg. If another man E whose weight is 3 Kg more than that of D, replaces A then the average weight of B, C, D and E becomes 79 Kg. What is the weight of A?

A car takes 5 hours to cover 100 kms distance at a particular speed whereas another car takes 3 hours to reach a particular distance at the same speed. Find the distance.

A cube is inscribed in a sphere. A right circular cylinder is within the cube touching all the vertical faces. A right circular once is inside the cylinder. Their heights are same and the diameter of the cone is equal to that of the cylinder.

What is the ratio of the volume of the cube to that of the cylinder ?

­ A wooden bowl is in shape of a hollow hemisphere of internal radius 8 cm and thickness 1 cm. Find the total surface area of the bowl?