Which combination of quarks produces a neutral baryon

A baryon is a particle consisting of three quarks or three antiquarks.

In order to form a neutral baryon (such as the neutron, which has electric charge zero), we must have two quarks with charge  (down, strange or bottom quark), and one quark with charge  (up, charm or top quark), so that the total charge will be zero:


A second possibility is to have a neutral baryon consisting of three antiquarks, of which two of them have charges  (anti-down, anti-strange or anti-bottom), and one of them has charge  (anti-up, anti-charm or anti-top), so that the total charge is still zero:

Your answer is 1.5 hope i