For the following questions answer them individually
The elevation of the top of a tower from a point on the ground is $$\ 45^\circ$$. On travelling 60 m from the point towards the tower, the alevation of the top becomes $$\ 60^\circ$$. The height of the tower, in metres, is
$$\frac{(a-b)^{2}}{(b-c) (c-a)}+\frac{(b-c)^{2}}{(a-b) (c-a)}+\frac{(a-c)^{2}}{(a-b) (b-c)}$$,  $$a\neq b\neq c$$ is
The product of two numbers is 2160 and their HCF is 12. Numbers of such possible pairs is
The following table gives the result of a survey based on newspaper reading habits. Study the table and answer the questions.
In the following questions, some part of the sentences have errors and some are correct. Find out which part of a sentence has an error. The number of that part is the answer. If a sentence is free from error, then your answer is (4) i.e., No error.
In the following questions, sentence are given with blanks to be filled with an appropriate word(s). Four alternatives are suggested for each question. Choose the correct alternative out of the four.