Multiple choice general knowledge math & puzzles There are 35 children in a class. 16 are boys. How many are girls? 17 18 19 21 Reveal answer Fill a bubble to check yourself C Correct answer Explanation To find the number of girls, subtract the number of boys from the total number of children: 35 - 16 = 19. The other options are incorrect subtractions (e.g., 35-16 is not 17 or 18).