A couple has three children and ALL of them are Non-tasters of PTC. What is
the percentage chance that their next child will also be a Non-taster?

“Them” is referred to as only the children, so the question does not tell us about the parent

A couple has three children and ALL of them are Nontasters of PTC What is the percentage chance that their next child will also be a Nontaster Them is referred class=