Quantitative Aptitude - Arithmetic Ability Questions

Which is the correct ascending order of the given numbers?

What is the value of cos 4π/3?

The number of solutions of the pair of linear equations x + 2y - 8 = 0 and 2x + 4y = 16 is

Four numbers, when arranged in ascending order, are w, x, y and z. The average of the smallest three numbers is 18, while the average of the largest three was 22. What is the range of the data?

What is the reflection of the point (3, 2) in the line y = -2?

To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will be its speed?

The perimeter of two similar triangles ABC and PQR are 36 cms and 24 cms respectively. If PQ = 10 cm then the length of AB is

Smaller diagonal of a rhombus is equal to length of its sides. If length of each side is 6 cm, then what is the area (in sq.cm) of an equilateral triangle whose side is equal to the bigger diagonal of the rhombus?