Quantitative Aptitude - Arithmetic Ability Questions

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

What is the third proportional to 10 and 20?

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

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?

Simplify 486b3x2a4z3/27a3b2z

Find the value of 777777?

When a number is increased by 34, it becomes 117% of itself. What is the number?

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