Question

Hello is anyone familiar with permutations and combinations?

Answer 1

yes

Answer 2

If the order doesn't matter, it is a Combination
If the order does matter it is a Permutation

Answer 3

Thats the problem its not always easy to tell if the orders matter or not
for instance
One hundred tickets, numbered 1, 2, 3, . . . , 100, are sold
to 100 different people for a drawing. Four different prizes
are awarded, including a grand prize (a trip toTahiti).How
many ways are there to award the prizes if
a) there are no restrictions?

Answer 4

this means that repetition is allowed

Answer 5

Yeah does that make it unordered then?

Answer 6

so would it be (100!)/(4!(100-4)!)

Answer 7

huh?