Quantitative Aptitude - Arithmetic Ability Questions

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

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

If 51.97 ­ (81.18 -­ x ) ­- 59.39 = 5.268, then value of x will be

Sahil sold an item for Rs. 280 at a loss of 20%. The cost price of the item was

Find the greatest number which on dividing 1580 and 3800 leaves remainders 8 and 1 respectively.

If the sum of digits is 9 and the difference between the digit in the ten's place and unit's place is 1, then the two-digit number is?

Pipe A can fill an empty cistern in 4 hours while along with Pipe B it can fill it up in 3 hours. Only Pipe A is turned on for an hour after which Pipe B is also turned on. How much total time will it take to fill up the cistern?

P, Q and R are channels which discharge solutions A,B and C respectively in a tank. When the tank is empty and all the three channels are opened what is the proportion of the solution C in the tank after 3 minutes, if the channels P, Q and R can fill the tank from empty to full in 30 minutes and 20 minutes and 10 minutes respectively when they are opened one at a time.