Quantitative Aptitude - Arithmetic Ability Questions

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

An article was sold for Rs. 2100 at a profit of 25%. What is its cost price?

If percentage of profit made,when an article is sold for Rs.78, is twice as when it is sold for Rs.69, the cost price of the article is

The square root of 5776 is

The copper wire when bent in the form of a square encloses an area of 121 cub.cm. If the same wire is bent into the form of a circle, find the area of the circle.

At what point does the line 3x + y = -6 intercept the x-axis?

The line passing through (4,3) and (y,0) is parallel to the line passing through (­-1,-­2) and (3,0). Find y?

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