Quantitative Aptitude - Arithmetic Ability Questions

In the question, two equations I and II are given. You have to solve both the equations and give answer

$$\begin{gathered} x2-11x+28=0 \\ y2-18y+81=0 \end{gathered}$$

What is the length of the side of an equilateral triangle, if its area is 64√3 sq cm?

Find the odd number from the given alternatives.

O is the circumcentre of ΔABC. If AO = 8 cm, then the length of BO is

Select the odd word from the given alternatives.

X and Y give an exam. Difference of their marks is 45 and the difference of their marks is 15% of the maximum marks. What is the maximum marks for the exam?

What is the value of [(cos32θ + 3 cos 2θ)÷(cos6θ – sin6θ)]?

At 30% discount the selling price of an article is Rs 1050. What is the selling price (in Rs) if the discount is 15%?