Good question. ; _5 B* ]9 o1 {( Q' {6 l1 j) E6 {3 w: e' \/ p8 K
Native speakers care much much less about the singular/plural consistency than we learners do. If you are an everyday listener, you'd find ton of such inconsistencies in nearly every speech they make. There's just no reasoning to it. 3 S1 q3 D9 L+ ~% U