Exercise 14 An urn contains 2 green, 2 blue, 2 red balls. We draw 4 balls without replacement. (i) Describe a suitable sample space and the probability mass function. (ii) Find the probability that among the first 3 chosen balls is 1 red ball, and the forth ball is red. Apply the multi- plication formula.

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.