Question

one sec ill post a pic of the thingy :)

Answer 1

here it is :)

Answer 2

The dartboard or the discounts?

Answer 3

Dart board that ones next ;)

Answer 4

Ok, a probability question. You have 4 darts and 3 possible values. It's a combination since the order of the darts doesn't matter.

Answer 5

so the values are 1,5,9 5,9,1 and 9,1,5?

Answer 6

Ah, sorry, it's a permutation.

Answer 7

oh ok

Answer 8

The formula for a permutation is n! over (n-r)!

Answer 9

n is 4, r is 3

Answer 10

so 1

Answer 11

Do you know factorial notation?

Answer 12

nope :/

Answer 13

Factorial is multiplying a number, then multiplying by one less, and it continues down to 1.

So 4! is 4*3*2*1, and 1! is 1. 4*3*2*1 also happens to be your answer.

Answer 14

what does the * mean?

Answer 15

Multiply

Answer 16

so 24?

Answer 17

That's it.

Answer 18

thanks buddy
:)

Answer 19

While it's open, might as well solve the other one too.

Answer 20

oh yeah thanks :)

Answer 21

Imagine you start at 100 dollars. What's 10 percent off of that?

Answer 22

10...

Answer 23

So 100-10 is 90. What is 20 percent of 90?

Answer 24

18?

Answer 25

Yep. 90-18 is 72. So 100-72 is your total discount.

Answer 26

Or 28%, to be exact.

Answer 27

oh ok thanks