•suppose i discovered that my cat had a taste for the adorable little geckoes that live in
the bushes and vines in my yard, back when i lived in arizona. in one month, suppose
he deposited the following on my carpet: six gray geckoes, twelve geckoes that had
dropped their tails in an effort to escape capture, and fifteen geckoes that he'd chewed
on a little. only one of the geckoes was gray, chewed on, and tailless; two were gray
and tailless but not chewed on; two were gray and chewed on but not tailless. if there
were a total of 24 geckoes left on my carpet that month, and all of the geckoes were at
least one of "gray", "tailless", and "chewed on", how many were tailless and chewed on
but not gray?