When my father taught me to use my brain, I only wrote four assumptions of the little author. Can you use your head? How many goldfish may be left? Why?

I proudly said: "The first kind of goldfish may be children with glasses, and their attitude is very serious. Why did goldfish die? He wants to find out why. He looked around with a magnifying glass and couldn't see the reason. I touched the east and west with my hand, but I still can't figure out the reason; He remembered the animal doctor and asked him to diagnose. The animal doctor said,' These three goldfish died of a bad cold, which is very contagious!' Hearing this, the goldfish keeper quickly fished out three dead goldfish and buried them, saying,' I want to feed the remaining seven goldfish.' So there are seven goldfish in the fish tank. The second kind of person who keeps goldfish may be a busy young man, who thinks that life and death are decided by fate, wealth is in the sky, and when he dies, he dies. Leave him alone, leave him alone, so there are ten goldfish in the goldfish bowl! The third kind of goldfish may be superstitious middle-aged people. He felt that the feng shui in the goldfish bowl was not good, so he quickly bought a new fish bowl and put seven live goldfish in the new fish bowl for a change of feng shui. There are only three dead goldfish left in the original goldfish bowl! ""The fourth kind of person who keeps goldfish may be a white-haired old man. When he saw his beloved goldfish die three times, he was so sad that he burst into tears. He even pointed his finger at his nose and blamed himself: "I am too old to keep ten little goldfish." . "Why should I keep it?" After that, the old man gave away the goldfish, so there was no goldfish in the goldfish bowl. ..... "I said and said.