Question

Seven students have been entered into the prize drawing for perfect attendance. The first name drawn recieves a $50 giftcard. The second name drawn recieves a $25 giftcard. The third name drawn recieves a $10 giftcard. How many ways can these rewards be given out? * bila.​

Answer 1

35 different ways!

Explanation:

7! / 3! * (4!)

If you know combinations and permutations, then the above formula will make sense.

Since this question is asking for all possible combinations, it's this formula if you don't know it:

n! / r! (n - r)!

n is the total number of things, which in this case are people. So, we get 7 and r is the set amount of the things used at a time which is 3... because out of 7 people only 3 can win gift cards.

Hope this helps!

Answer 2

21

Explanation:

there are 7 students and 3 prizes so all you needed to do was multiply 3 by 7 or 7 by 3.