Quantitative Aptitude - Arithmetic Ability Questions

If ax - 4y = -6 has a slope of -3/2. What is the value of a?

The average of 12 numbers is 9. If each number is multiplied by 2 and added to 3, the average of the new set of numbers is

Fraction that lies between 2/5 and 4/9 is

Find the mean and mode of the numbers 1, 9, 5, 4, 2, 1, 9, 9, 2, 1, 9, 1, 2, 1?

Length of the sides of a triangle are a, b, c respectively. If a2 + b2 + c2 = ab +bc + ca then the triangle is

What is the value of Cot 60°- Cos 45°?

If two complementary angles are in the ratio of 2:3, find the ratio of square of smaller angle to square of greater angle.

What is the value of sin (–π/3) + cos(–π/6)?