We will see that the total number of ways in which we can distribute 20 different prizes among 180 people is:
C = 6.818e46
Here we need to count how many selections do we have. Each prize will be a selection, so we have 20 selections.
Now we need to count the numbers of 6for each selection.
For the first prize, there are 180 options.
For the second prize, there are 179 options (because one person already got a prize).
For the third prize, there are 178 options.
And so on.
The total number of combinations is given by the product between the numbers of options:
C = 180*179*178*...*161*160 = 6.818e46
If you want to learn more about combinations, you can read:
https://brainly.com/question/11732255