Alex counts forward starting from . He says every number until he gets to . Then he counts more numbers. What number does Alex say last?
- (correct answer)
Explanation: Alex counts from 12 to 17: (12, 13, 14, 15, 16, 17), then counts 2 more numbers after 17: (18, 19). The last number he says is 19. Choice A (17) is where he stops the first part of counting. Choice B (18) represents counting only 1 more number after 17. Choice D (20) represents counting 3 more numbers after 17.