If the volumes of two cubes are in the ratio 27 : 64 and then the ratio of their total surface area is 

The curved surface area of a cylindrical pillar is 264 m² and its volume is 924 m³. Find the ratio of its diameter to its height.

Direction: Study the following graph carefully and answer the following questions.

The production of company D is approximately how many time that of the production of company A?

The graphs of the equations 3x + y-5=0 and 2x- y -5=0 intersect at the point P(α,β).  What is the value of (3α + β)?

Direction: The following table shows the number of students of 7 colleges A, B, C, D, E, F, G participating in extra-curricular activities :

Percentage of the number of students in activity II to that of IV is ?

In what ratio should sugar costing ₹40 per kg be mixed with sugar costing ₹48 per kg, so as to earn a profit of 20% by selling the mixture at ₹54 per kg?

What will come in the place of question mark (?) in the following question?

  $$?=5\sqrt{ \left(243 \right)^2}$$

The value of Let $$\left({\sqrt {1875}\over\sqrt { 3888}}÷{\sqrt {1200}\over\sqrt {768}} \right)\ × \left({\sqrt {175}\over\sqrt {1792}} \right)\ $$. Then $$ \sqrt { x}$$ is equal to: