Question

Evaluate the expression.

Answer 1

1 - (pic attached)

Answer 2

Are you allowed to use the calculator on this?

Answer 3

i am allowed

Answer 4

OK, I can give you a formula, calculator is not necessary.\[n~~nPr~~r=~~n!/(n-r)!\]

Answer 5

simplify each, top and bottom like this and do it.

Answer 6

I'll show you....

Answer 7

\[6~~P~~4=6!/4!=5 \times 6=30\]this is over,\[8~~P~~6=8!/6!=7 \times 8=56\]\[SO,~~~~~30/56=15/28\]

Answer 8

if you don't understand, ask!

Answer 9

what does ! stand for

Answer 10

Another similar question
Evaluate the factorial expression.

Answer 11

\[4!=1 \times 2 \times 3 \times 4\]

Answer 12

So if you have\[6!/4!=(1 \times 2 \times 3 \times 4 \times 5 \times 6)/(1 \times 2 \times 3 \times 4)= 5 \times 6\]\[bec ause~~"(1 \times 2 \times 3 \times 4)"~~~~can cel~~~out.\]

Answer 13

Go over my work above, and tell me if you get it, OK?

Answer 14

can you do the next question also

Answer 15

Yes, but (please) post it in a separate question/thread.

Answer 16

ok

Answer 17

tnx for the medal.