Quantitative Aptitude - Arithmetic Ability Questions

If the length of the shadow of a vertical pole be √3 times the height of the pole, the angle of elevation of the sun is:­

What is the average of all the one digit, two digit and three digit natural numbers?

Which of the following is NOT prime number?

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

A discount of 45% on an article is equal to the discount of 65% on other article. What is the respective ratio of the marked price of both the articles?

If (6 ­- 18x) -­ (x ­- 7) = 8, then the value of x is ______.

What is the equation of the line which passes through the points (3,­2) and (5,3)?

What are the co­-ordinates of the mid point of the segment joining points C(0,­-3) and D(8,5)?