Quantitative Aptitude - Arithmetic Ability Questions

The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is

The average height of A, B and C is 148 cm. If the average height of A and B is 136 cm and that of B and C is 125 cm, then what is the height (in cm) of B?

Dodecahedron has 30 edges. How many vertices does it have?

If X2+4y2+z2-4x-2z+5-0, then find the value of y15+x5z14

In ∆ABC, ∡A + ∡B = 75 and ∡B + ∡C = 140, then ∡B =

The curved surface area and the diameter of a right circular cylinder are 660 sq.cm and 21 cm respectively. Find its height (in cm).

If 3x + 2 ≥ x - ­1 and 2x -­ 4 ≤ 2 - ­x/3; then x can take which of the following values?

What is the value of cos2A/(1 + sinA)?