Multiple Choice Questions

A farmer applies different fertilizers to his cotton crops. He wants to see which will make his plants grow the highest. What is the independent variable?

An image, perception or concept that is capable of measurement is called :

The length of shadows of Rakesh and Muhammed are found to be in the ratio of 3:4 at the same time of the day. What could be the possible heights of Rakesh and Muhammed?

If a coin is tossed n times, what is its sample space?

Which of the following statistical methods is not a measure of central tendency?

If \( \rm x + \frac{1}{x} = 2 \), what is the value of \( \rm x^{100} + \frac{1}{x^{100}} \)?

How many terms must be taken of the series 3+6+12+..., to make the sum 1533?

Let A be the arithmetic mean and G be the geometric mean between two numbers a and b, then which of the following inequality holds?

If \( \alpha \) and \( \beta \) are the roots of the polynomial \( \rm nx^{2} - nx + n \). What is the value of \( \rm \alpha^{2} + \beta^{2} \)?

Five years ago, Aayus was thrice the age of his sister. At present, the sister is 10 years old. What is the possible age of Aayus five years ago?