You have rabbit, a ferret, a gerbil, and a turtle how many different ways can you feed them?

Kevin has a rabbit, a ferret, a gerbil, and a turtle. He feeds them in a different order each day. In how many different orders can Kevin feed his pets?
4th grade math for my daughter and I know there has got to be some kind of simple equation or easy way to do this instead of writing them all out which I have been doing for a lot of the other ones and I know there is an easier way to explain it to her. Please let me know! I waited too long to ask so now it's past bettime!! :(
HarleyGirl6815
Asked Sep 20, 2012
I would tell her to start out with 2 possibilities, then three and then four so she can see the effect of adding more possibilities.

There are 24 possible permutations of a 4 digit sequence. Where "R" = Rabbit, "G" = Gerbil etc:

RGFT
RGTF
RFGT
RFTG
RTGF
RTFG
GRFT
GRTF
GFRT
GFTR
GTRF
GTFR
FRGT
FRTG
FGRT
FGTR
FTRG
FTGR
TRGF
TRFG
TGRF
TGFR
TFRG
TFGR
Rob
Answered Sep 21, 2012
Edited Sep 21, 2012

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