Quantitative Aptitude - Arithmetic Ability Questions

Two pipes X and Y can individually fill a tank in 48 and 72 min respectively. If they are opened simultaneously, how long will it take for the tank to fill? 

On selling 120 bottles, Vijay earns profit equal to the cost price of 10 bottles. What is the profit percentage?

If x + 1x = 3, then x18 + x12 + x6 + 1 value is

Which of the following is TRUE?

If A : B = 3 : 5, then what is the value of A + B : B?

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

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

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