For the following questions answer them individually
A and B are two alloys of gold and copper in the ration 7:2 and 7:11 respectively. If equal quantities of these alloys are melted to formanalloy C thenthe ratio of gold and copperin C is
Let h and g respectively denote the least common multiple and the greatest common divisor of a and b. If h : g = 20 : 1, h + g = 2520 and a = 480 then b =
If $$a_1, a_2, a_3$$ and $$a_4$$ in the increasing order of the elements in the set $$\left\{\frac{2}{7}, \frac{7}{15}, \frac{5}{8}, \frac{9}{23}\right\}$$ then $$a_4 - a_1 = $$
If $$\alpha_1 = \sqrt[3]{4}, \alpha_2 = \sqrt[4]{5}, \alpha_3 = \sqrt[4]{7}$$ and $$\alpha_4 = \sqrt{3}$$ then their correct order is
For a rational number r, if we add 3 to its denominator it is $$\frac{1}{3}$$ and if we add 4 to its numerator it is $$\frac{3}{4}$$. Then r =
If the length and breadth of a rectangle are increased by 20% and 25% respectively then the percentage increase in its area is