We also learned the difference between combinations and permutations.

**Permutations**are ordered arrangement of objects.

An example of this is license plates

You can have ABC 123, BAC 231 or either CBA 321 …etc.

Although you are using the same letters and numbers, the order they are put in are important because they all represent different license plates.

The formula for permutations is:

And to get this formula plugged into your calculator if you go MATH > PRB > #2

Now a**combination**is when the order of selections doesn’t matter.

To find the number of combinations, you first calculate the number of permutations the divide by the number of ways a single set could be rearranged.

The formula for combination is:

And to get this formula plugged into your calculator if you go MATH > PRB > #3Anyways thats all..next scribe post will be

**d[x_x]b**

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