Quantitative Aptitude - Arithmetic Ability Questions

If a shopkeeper sells an item at Rs 4200 which is marked as Rs 4800, then what is the discount (in %) that he is offering?

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

Select the odd word from the given alternatives.

If x = 93 , y = 93 , z = 94 then the value of x2 - y2 + 10xz + 10yz is

The angle of elevation of the top of a tower, vertically erected in the middle of a paddy field, from two points on a horizontal line through the foot of the tower are given to be α and β (α>β). The height of the tower is h unit. A possible distance (in the same unit) between the points is

What is the value of sinAtanA/(1 - cosA)?

If x = y + 2 then x3 - y3 - z3 is

What is the value of [(sin 7x – sin 5x)÷(cos 7x + cos 5x)] – [(cos 6x – cos 4x)÷(sin 6x + sin 4x)]?