Question

determine the number of possible permutations of two of the five vowels: a, e ,i, o, and u. List them all

Answer 1

ae
ai
ao
au
aa
ea
ee
ei
eo
eu
ia
ie
ii
io
iu
oa
oe
oi
oo
ou
ua
ue
ui
uo
uu

Answer 2

that's long

Answer 3

there is 25 possible

Answer 4

i have that but my problem is that my work doesn't match up.. i'm trying to find the number using a formula and thought that (5 over 2) was the right formula, but that ends up being 10, which would be right if I'm not supposed to count repeats (like ae and ea) but since it says find the permutations i think I am. So i'm not sure what formula is the right one to use

Answer 5

u do count ae with ea

Answer 6

yes but what formula gives me 25 as a number? not 5! and not (5 over 2)

Answer 7

i'm pretty sure i'm missing something really basic, i just can't figure it out

Answer 8

I remembered!

Answer 9

there is 5 possible combinations for "a" right?

Answer 10

aren't there 9 if you count the ones that are switched? aa ae ai ao au ea ia oa ua

Answer 11

well I'm saying for when a is the first one

Answer 12

oh, yeah

Answer 13

so isn't there 5

Answer 14

ok what about "b" there is 5 right

Answer 15

yeah

Answer 16

so, this would go for all 5 of them to its 5+5+5+5+5 or 5x5= 25
got that?

Answer 17

yes, but that's not really using any equation that actually relates to permutations

Answer 18

this is a way to show the equation in a more "easy" way

Answer 19

good job understanding this way, not many people understanding this