Quantitative Aptitude - Arithmetic Ability Questions

An equilateral triangle of area 300 cm2 is cut from its three vertices to form a regular hexagon. Area of hexagon is what percent of the area of triangle?

If 2+x+2-x2+x-2-x=2,then the value of X is

The base of a triangle is half the base of a parallelogram having the same area as that of the triangle. The ratio of the corresponding heights of the triangle to the parallelogram will be

If x tan 60° + cos 45° = sec 45° then the value of x2 + 1 is

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

If Tan A = 15/8 and Tan B = 7/24, then Cos(A - B) = ?

Find the 4th proportional to 9, 17 and 27.

If 2cos2A - 1 = x, then the value of x is