List of top Quantitative Aptitude Questions

The Standard Deviation of 2, 4, 6, 8, 10 is
What is the Geometric Mean of 12, 30, and 75?
If \( y = x(x - 1)(x - 2) \), then the derivative \( \frac{dy}{dx} \) is
The equation of the straight line passing through the points \( (1, -5) \) and \( (-2, 4) \) is
\[ \lim_{x \to \infty} 5 \left( 1 + \frac{4}{x} \right)^x = \]
If each exterior angle of a regular polygon is \( 36^\circ \), then the number of sides of the polygon is
The arithmetic mean of 7.6, 6.8, 5.4, 6.4, 7.2, (4)8, 6.6, and 5.8 is
What is the area, in square units, of the triangle formed by the points \( (3, 2), (3, -6) \) and \( (5, 2) \)?
If \( x^4 - x^3 + 2x^2 + ax + b \) is exactly divisible by \( x^2 - 3x + 2 \), then \( (a, b) \) is
If the angle of elevation of the top of a tower of height 100 meters from a point to its foot is \( \tan^{-1} \left( \frac{4}{5} \right) \), then what is the distance from the point to its foot in meters?
\[ \tan \left( -\frac{23}{3} \pi \right) = \]
If \( A \) is a non-singular 3x3 matrix, then \( \left| 5A \right| \) is
The father is 7 times older than his son. After 5 years the sum of their ages would be 50 years. The son’s age at present is
\[ (1 + \sqrt{2})^4 + (1 - \sqrt{2})^4 \]
A, B and C start a business with investments of Rs.6,000, Rs.7,000, and Rs.8,000 respectively. The profit at the end of the year is Rs.3,150. Then share of B in the profit is
The solution set of \( x^2 + 6x < 91 \) is
The volumes of two cones of equal height are in the ratio \( 1849 : 961 \). What is the ratio of their radii?
If \( \frac{a}{c} = \frac{c}{d} = \frac{e}{f} \), then
If \( 8^{2x - 4} = 16^{x - 2} \), then \( x = \)
A sum becomes double in 8 years at simple interest. What is the rate percent per annum?
Three numbers in the ratio 2:3:4 have their sum 270. Then the L.C.M. is
The G.C.D. and L.C.M of two numbers are 12 and 252 respectively. If one number is 36, then the other number is
The distance between the lines \( 3x + 4y + 1 = 0 \) and \( 6x + 8y - 1 = 0 \) is
Evaluate the limit: \[ \lim_{x \to 2} \left[ \frac{1}{x - 2} - \frac{1}{x^2 - 3x + 2} \right]. \]
If the area of a square field is 7200 sq. m, then the length of its diagonal in meters is