Question

this makes no sense please help??

Answer 1

The expression 7! is equal to which of the following?
a)7

b)720

c)5040

b)40,320

Answer 2

what part of it doesnt make sense?

Answer 3

i don't understand gow to find the answer

Answer 4

its just multiplying all the numbers 7 and below

Answer 5

oh ok thanks how about this one
What is the value of 10P10?
a )3,628,800

b) 1,814,400

c) 100

d) 0

Answer 6

10P10 = 10!

so just multiply all the numbers 10 and below

Answer 7

so all your doing is 10*9*8*7*6*5*4*3*2*1= 3,628,800

Answer 8

correct

Answer 9

ok thank you so much

Answer 10

note that: 10P4 is telling use to do the same thing, but with the first 4 numbers there

10*9*8*7

think of nPr as, "Picking" the first r numbers from n

Answer 11

so if its 8P4 it would be 8*7*6*5

Answer 12

exactly

Answer 13

ok thank you! you've helped so much!

Answer 14

;) good luck

Answer 15

:) thanks