Question

How to solve probabilities

Answer 1

The  probability of each sample point must be equal to 1/2

Answer 2

You can solve many simple probability problems just by knowing two simple rules:

The probability of any sample point can range from 0 to 1. The sum of probabilities of all sample points in a sample space is equal to 1.

The following sample problems show how to apply these rules to find (1) the probability of a sample point and (2) the probability of an event.