Please help with this

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

If eh = hg and hg=16, find the diameter of k

The sum of two numbers is 86, and their difference is 20. find the two numbers