Question

Evaluate 9P8

A.

1

B.

72

C.

181,440

D.

362,880

Answer 1

@nincompoop

Answer 2

okay,
eh,
its

like
small 9 P small 8

Answer 3

\[^9P_8\]
\[\frac{(9!)}{(9-8)!}\]
Can you fin now?

Answer 4

@selenamalter Do you know the relation of permutations?
\[^AP_B=\frac{A!}{(A-B)!}\]

Answer 5

um, not really, what would the next step be

Answer 6

Do you know how factorial is calculated?
\[n!=??\]

Answer 7

um,
im trying here

Answer 8

still confused

Answer 9

Okay, I'll explain you this
\[1!=1\]
\[2!=1\times 2\]
\[3!=1\times 2\times3\]
and so on
\[n!=1.2.3....(n-1).n\]
Do you get this?

Answer 10

oh, um ueah a little more,
so its going to be
1

Answer 11

We have
\[\frac{9!}{(9-8)!}=\frac{9!}{1!}\]

Answer 12

so what would you get?

Answer 13

72

Answer 14

9!=1*2*3*4*5*6*7*8*9

Answer 15

181440

Answer 16

WAIT
362,880

Answer 17

9!=2*3*4*5*6*7*8*9
9!=6*4*5*6*7*8*9
9!=24*5*6*7*8*9
9!=120*6*7*8*9
9!=720*7*8*9
9!=5040*8*9
9!=40320*9
9!=362880
@selenamalter You're right

Answer 18

YAYAYAYAY