H.C.F. of 9/10, 12/25, 18/35 and 21/40 is

The H.C.F. of two numbers is 8. Which one of the following can never be their LCM

Rao, Kaul, Bansal and Agarwal enter into a partnership, Rao, Kaul, Bansal subscribe 1/3rd, 1/4th, 1/5th of the investment respectively and Agarwal the rest. If the profit of INR 984000 is divided according to their investment, what is Agarwal's share of profit

If the solubility of magnesium hydroxide is √2, the value of solubility product is

A sum on compound interest becomes three times in 4 years. How many years will it take to become 27 times the original if the interest is calculated at the same rate

If the diagonals of two squares are in the ratio 2:5, find the ratio of their areas