Answer:
21/2 or 10 1/2
it's 12 because
2×6=12
3×4=12
4×3=12
and all of them have twelve
let h = horse, let c = cow, let p = pig
so,
hcp
hpc
cph
chp
phc
pch
so, that is 6 different ways she can arrange it.
yeah .It can be measured