Quantitative Aptitude - Arithmetic Ability Questions

The average weight of 30 students in a class is 25 kgs. If the weight of the class teacher is added, the average weight increase by 2 kgs. The weight of the class teacher in kgs is

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?

What is the value of [tan (90 – A) + cot (90 – A)]2/[2 sec2(90 – 2A)]?

If 5 - 2x ≥ 4 - x and 3(2 - x) > 2 - 4x; then x can take which of the following values?

If cos 2π/3c = x, then the value of x is

An angle is four times its complementary angle. What is the measure of the angle?

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

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