APA APA # 3.42-3.43 - Numbers expressed as words or figures Set 2 1. 4 of 40 blackbirds or four of 40 blackbirds2. 21 traits on each of three checklists or 21 traits on each of 3 checklists Answer Key Goto: set 1 set 2 set 3 set 4 set 5 set 6 set 7