Quantitative Aptitude - Arithmetic Ability Questions

Solve the following 7 x {4 + (-2) x (-3)} = ?

If 12x2 - ax + 7 = ax2 + 9x + 3 has only one (repeated) solution, then the positive integral solution of a is

Find the odd one out.

The average age of a batch of 19 members is 24 years. If the age of the faculty be included, then the average increases by 4 months. What is the age of the faculty?

What is the age of the eldest sister if, the sum of ages of 5 sisters born at the intervals of 3 years each is 50 years?

At what point does the line 3x + y = -6 intercept the x-axis?

The line passing through (4,3) and (y,0) is parallel to the line passing through (­-1,-­2) and (3,0). Find y?

If the sum of the interior angles of a regular polygon is 1260 deg , then how many sides does it have?