Someone would have to invent them
Nothing would happen. Humans ARE animals.
They would die.
we would die
Then only the lesson mathematics would be taught on that day.
The same thing that would happen to humans if we had no food.
we would not be able to walk
then you would not even be here
we couldnt see
Many would die.
we would all be eaten by flies
There would be no mathematics and so no science or technology and so no computers through which you could ask this question.
Humans are already animals, being part of the animal kingdom. Therefore, what would happen is that we would carry on as usual.