Simple Probable on Equiprobable Sample Space

Topic Content:

This is the likelihood of an individual event occurring in a sample space where all results are equally probable.

It is calculated using the formula:

P(E) = \( \frac{No\:of \: favourable\:outcomes}{Total \:number\:of\:outcomes} \)

Example 6.5.1:

A bag contains 5 red, 6 blue and 7 green balls. If one ball is drawn out at random, what is the probability of getting a green ball?

Solution

Total balls: 5 + 6 + 7 = 18

Pr(of picking green ball) = \( \frac{7}{8} \)

Example 6.5.2:

A