Quantitative Aptitude - Arithmetic Ability Questions

In an examination, 52% candidates failed in English and 42% failed in Mathematics. If 17% failed in both the subjects, then what percent passed in both the subjects?

A pentagonal prism has 15 edges. How many vertices does it have?

A line cuts two concentric circles. The lengths of chords formed by that line on the two circles are 4 cm and 16 cm. What is the difference (in cm2) in squares of radii of two circles?

The area of an equilateral triangle is 25√3 sq.cm. Find its side (in cm).

If a - b = 1 and ab = 6, then what is the value of a3- b3?

A dealer is selling an article at a discount of 5% on the Marked price. If the Marked price is 12% above the cost price and the article was sold for Rs. 532 then the cost price is (in Rs.)

What is the value of 5.6x0.36+0.42x3.20.8 x 2.1 ?

The ratio of the amount of work done by (x-1) labours in (x+1) days and that done by (x+1) labours in (x+2) days is 5 : 6. Then the value of x is