IKMC 2027 - Grades 5-6 - Self-study SET 5 - Thematic Batch 3 Question 20

Tarzan counts 54 animals. Of them, 37 can fly, 25 walk and 20 swim; 13 can both fly and walk, 12 fly and swim, and 11 walk and swim; 5 can do all three. How many can do none of these activities?



Editorial clarification: Count animals with none of the three abilities.