What is the probability of the sun setting tomorrow?

For the given data given below, calculate the mean of its median and mode.

6, 2, 5, 4, 3, 4, 4, 2, 3

Find the median of the given data if the mean is 4.5.

5, 7, 7, 8, x, 5, 4, 3, 1, 2

When a spinner with three colours (Fig. 3.5) is rotated, which colour has more chance to show up with arrow than the others?

What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?