Anonymous Should approach be plural because we have two approaches, numerical and artistic? No; there could be no difference(s) at all if there were just one approach. Use the singular if they differ in only one factor or aspect; use the plural if they differ in more than one factor or aspect.
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AnonymousShould approach be plural because we have two approaches, numerical and artistic?No; there could be no difference(s) at all if there were just one approach.