Quantitative Aptitude - Arithmetic Ability Questions

Find out the odd word/letters/number/number pair from the given alternatives.

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

The sum of the ages of father and son at present is 33. Two years ago the product of their ages was 28. What is the age of the father and the son?

The distance between places U and V is 1008 km. An express train leaves place U at 9:00 a.m. and runs at a speed of 126 km/hr. The train stops on the way for 20 minutes. At what time (in p.m.) the train will reach at the place V?

In how many months will Rs 8,000 yield Rs 2,648 as compound interest at 20% per annum compounded semi-annually?

If x2 + y2 + 6x + 5 = 4(x - y) then x - y is

If 12x = 192- 112, what is the value of x?

Find x, if 5x-6+5x+6 = 6