Question

Simplify: 8P3

A. 42
B. 336
C. 40,432
D. 56

Answer 1

nPr=n!/(n-r)!

Answer 2

8P3=8!/(8-3)!

Answer 3

Do you understand how to do it? @KendrickLamar2014

Answer 4

5!=?

Answer 5

The formula you would use is \[nPr=\frac{ n! }{ (n-r)! }\]

Answer 6

yes

Answer 7

Next you would \[\frac{ 8! }{ (8-3)! } = \frac{ 8! }{ 5! } = \frac{ 8*7*6*5*4*3*2*1 }{ 5*4*3*2*1 }\]

Answer 8

That is a partial permutation, \[nPk=\frac{ n! }{ (n-k)! } \rightarrow 8P3 =\frac{ 8! }{ (8-3)! }=\frac{ 8! }{ 5! }= 6\times7\times8= 336\]

Answer 9

So the answer is B

Answer 10

Yes

Answer 11

DO you have a calculator handy? If so, Use of what I did. Multiply the top and multiply the bottom. Then divide it and that would be your final answer!:) Good Luck!

Answer 12

40320/120= 336

Answer 13

It's easier if you cancel them out

Answer 14

5! = 5*4*3*2*1

Answer 15

and 8! = 8*7*6*5*4*3*2*1

Answer 16

Just cancel the 5*4*3*2*1 Because they`re dividing and it is multiplying both

Answer 17

Ok, thanks

Answer 18

welcome