Answer
See answers.
Work Step by Step
a. We are considering $uud$. This has charge = +1, baryon number = +1, strangeness = 0, charm = 0, bottomness = 0, and topness = 0.
$$uud = p$$
b. We are considering $\overline{u}\overline{u}\overline{s}$. This has charge = -1, baryon number = -1, strangeness = +1, charm = 0, bottomness = 0, and topness = 0.
$$\overline{u}\overline{u}\overline{s}=\overline{\Sigma}^{-}$$
c. We are considering $\overline{u}s$. This has charge = -1, baryon number = 0, strangeness = -1, charm = 0, bottomness = 0, and topness = 0.
$$\overline{u}s=K^{-}$$
d. We are considering $d\overline{u}$. This has charge = -1, baryon number = 0, strangeness = 0, charm = 0, bottomness = 0, and topness = 0.
$$d\overline{u}=\pi^{-}$$
e. We are considering $\overline{c}s$. This has charge = -1, baryon number = 0, strangeness = -1, charm = -1, bottomness = 0, and topness = 0.
$$\overline{c}s={D_S}^-$$
