Quantitative Aptitude - Arithmetic Ability Questions

A factory buys 10 machines. 1 Machine­A, 4 Machine­B and rest Machine­C. Prices of the machines are Rs 90000, Rs 40000 and Rs 40000 respectively. Calculate the average cost of these machines?

A 220 metres long train takes 33 seconds to cross a 440 metres long bridge. How much time (in seconds) will the train take to cross a 350 metres long bridge?

If tan ­-5π/3 = x, then the value of x is

If y = √3 - √2, then find the value of 1y3 - y3.

What is the third proportional to 10 and 25?

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

What is the reflection of the point (6, -3) in the line y = 2?

The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?