Quantitative Aptitude - Arithmetic Ability Questions

Coefficient of x in (x + 8)(6 -­ 3x) is

The average revenues of 7 consecutive years of a company is Rs 71 lakhs. If the average of first 4 years is Rs 66 lakhs and that of last 4 years is Rs 78 lakhs. What is the revenue for the fourth year.

A satellite airtime bill costs Rs. 8 for 5 minutes 40 seconds. What is the cost in rupees for 4 minutes 20 seconds? (Round upto one decimal).

The radius of two cylinders are in the ratio of 3:2 and their heights are in the ratio 3:7. The ratio of their volumes is :

If the diameter of a hemisphere is 21 cm, then what is the volume (in cub.cm) of hemisphere?

At least one diagonal bisects the other in a _____.

p3 + q3 + r3 – 3pqr = 4. If a = q + r, b = r + p and c = p + q, then what is the value of a3 + b3 + c3 – 3abc?

3cosA is equal to