what kind of quarks form proton and neutron

Protons and neutrons are made up of three types of quarks: up quarks (u) and down quarks (d), which make up both protons and neutrons, and strange quarks (s), which are present in some types of particles but not in protons or neutrons. Specifically, protons are composed of two up quarks and one down quark (uud), while neutrons are composed of one up quark and two down quarks (udd).