Quantitative Aptitude - Arithmetic Ability Questions

In the following question, select the odd word from the given alternatives.

A boy found the answer for the question "Subtract the sum of 1/4 and 1/5 from unity and express the answer in decimals" as 0.45. The percentage of error in his answer was

If a2b+c=b2C+a=a2a+b=1 then 11+a+11+b+11+c is

What is the value of (1/√2) Cot 45° + (1/√3) Cosec 60°?

From a square plate with each side 7 cm, squares of area 0.25 sq. cm are cut out at each corner and the remaining plate is folded along the cuts to form a cuboid. The volume of this open-top cuboid will be ......... . cub.cm

The ratio of the cost price and selling price of a bulb is 15 : 18. What is the profit percentage?

A can paint a house in 55 days and B can do it in 66 days. Along with C, they did the job in 12 days only. Then, C alone can do the job in how many days?

If a merchant offers a discount of 20% on the list price, then he makes a loss of 10%. What % profit or % loss will she make if he sells at a discount of 5% of the list price?