Quantitative Aptitude - Arithmetic Ability Questions

Select the odd number from the given alternatives.

Choose the one which is odd from the following options.

The percent profit made when an article is sold for Rs. 78 is twice as much as when it is sold for Rs. 69, the cost price of the article is?

If √(sec2A - 1)/secA = x, then the value of x is

What is the slope of the line, perpendicular to the line 3x - 6y = 4?

A dealer sells a machine having marked price as Rs 3840 at a discount of 20%. What is the selling price (in Rs) of the machine?

D and E are points on the sides AB and AC respectively of ΔABC such that DE is parallel to BC and AD:DB = 4:5, CD and BE intersect each other at F. Then the ratio of the areas of ΔDEF and ΔCBF

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