The big challenge _ The fun mathematics stories

Interesting math stories to learn data usage the sheep father decided to hire a strong and brave guard to protect his small lambs from the evil wolves and the animals that responded to his request had to pass a series of tests to verify their abilities in the end only a dog, a tiger, and a gorilla remained which of them will the sheep father choose to protect his young? My dear children if you want to know who will become the sheep's guard, come on quickly open the book! Sizes: 20×20