The radii of two cylinders are in the ratio 3:5 and their heights are in the ratio 2:3. Find the ratio of their curved surface areas
Find the total volume of 14 cubes whose edges are 12 cm, 13 cm,.....,25 cm respectively
If ∝ and β are the roots of the equation 3x2 - 6x+4 = 0, find the value of ∝/β+β/∝
If 6% savings of the salary of a person is Rs. 3000. Find his actual salary
B is twice as old as A, but half the age of F. C is half the age of A but twice the age of D. Which two persons form the pair of youngest and oldest
Standard deviation of first 7 natural numbers is