Quantitative Aptitude - Arithmetic Ability Questions

The average revenues of 11 consecutive years of a company is Rs 77 lakhs. If the average of first 6 years is Rs 72 lakhs and that of last 6 years is Rs 84 lakhs, What is the revenue for the Sixth year.

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The 15th observation is

The length, breadth and height of a cuboid are in the ratio 19 : 11 : 13. If length is 30 cm more than height, then what is the volume (in cub.cm) of this cuboid?

If 2x- ­2(x ­- 2) < 5 ­- x > ­-2x + 2; then the value of x is

If a = 5, b = 4, c = 8 then find the value of (a3 + b3 + c3 - 3abc)/(ab + bc + ca - a2 - b2 - c2)

The bus fare between two cities is increased in the ratio 5:11. Find the increase in the fare, if the original fare is Rs. 275.

If x = 11, the value of x5 - 12x4 + 12x3 - 12x2 + 12x - 1 is

If a4 + 1 = [a2 /b2 ] (4b2 – b4 – 1), then what is the value of a4 + b4?