If p : q : r = 1 : 2 : 4, then $$\sqrt {5{p^2} + {q^2} + {r^2}} $$    is equal to -

A and B together have Rs. 1210. If $$\frac{4}{{15}}$$ of A's amount is equal to $$\frac{2}{{5}}$$ of B's amount, how muc…

A mixture contains milk and water in the ratio 5 : 1. On adding 5 litres of water, the ratio of milk and water becomes 5…

The cost of a table and a chair are in the ratio of 5 : 7. If the cost of chair and table is increased by 20% and 10% …

The annual income of A and B are in the ratio 4 : 3 and the ratio of their expenditures is 3 : 2. If each of them saves …

How many sides does a regular polygon have whose interior and exterior angle are in the ratio 2 : 1 ?

If $$\frac{x}{2} = \frac{y}{3} = \frac{z}{4} = $$   $$\frac{{2x - 3y + 5z}}{k}{\text{,}}$$   &nbsp…

The sides of a triangle are in the ratio $$\frac{{\text{1}}}{{\text{2}}}$$ : $$\frac{{\text{1}}}{{\text{3}}}$$ : $$\frac…