Quantitative Aptitude - Arithmetic Ability Questions

65.The angles of elevation of an aeroplane flying vertically above the ground, as observed from the two consecutive stones, 1 km apart; are 45o and 60o. The height of the aeroplane from the ground is

If x + (1/x) = 2, then what is the value of x21 + (1/x1331)?

If a : b is 32 : 35 and b : c is 21 : 32, then a : c is?

If A = 30°, B = 60° and C = 135°, then what is the value of sin3A + cos3B + tan3C – 3sin A cos B tan C?

If p/q = (x+3)/(x-3), then what is the value of p2+q2p2-q2 ?

A man spends 59% of his income and saves the rest. What percentage of his expenditure does he save?

For x = 462+3, what is the value of x+22x-22+x+23x-23

Select the odd word/letters/number/number pair from the given alternatives.