Probabiliity

Probability is another way of looking at the likelihood of an event.
It compares the number of ways an event can happen to the number of total possible outcomes.

Pick a number from 1 to 10. What is the probability that you picked an odd number?
There are five odd numbers between 1 and 10.
The probability is 5:10. Or you can express it as a fraction: 5/10.
Since it's a fraction, why not reduce it? The probability that you will pick an odd number is 1/2.
Probability can also be expressed as a percent...1/2=50%
Or as a decimal...1/2=50%=.5

There are 8 cannons on the wall of a fortress. Two of the cannons are empty and 6 are ready to fire. What is the probability that a cannon selected at random will fire?
In this case, there are 6 favorable outcomes (cannons that will fire) and a total of 8 outcomes all together. The probability is 6 to 8.
Written as a fraction

What is the probability that a key chosen at random will be the one that opens the lock?

Permutations

writing: Kirsten Anderson

art: mC

probability