Quantitative Aptitude - Arithmetic Ability Questions

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

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

If 4x + 3y = 11 and 3x + 2y = 8, then (x,y) is

2sin[(C+D)/2].sin[(D­-C)/2] is equal to

The value of tan(-405°)

A boat covers a distance of 14 km upstream and 16 km downstream in 9 hours. It covers a distance of 12 km upstream and 40 km downstream in 11hours. What is the speed (in km/hr) of the boat in still water?

If (8 - 10x) - (13x - 2) = -9, then the value of x is

If a = 3+23-2, b = 3-23+2 then a2+b2-ab ?