Final answer:
The infinite monkeys theorem suggests that with an infinite number of monkeys randomly typing, it is theoretically possible for one of them to type Shakespeare's plays.
Step-by-step explanation:
The concept you are referring to is known as the infinite monkeys theorem. According to this theorem, if you have an infinite number of monkeys randomly typing on typewriters for an infinite amount of time, it is theoretically possible that one of them will eventually type out the complete works of William Shakespeare.
Regarding your question about whether there is a subset of monkeys typing the same thing at different speeds, the answer is no. In the thought experiment, the monkeys are randomly typing, and their typing speed has no effect on the probability of them typing Shakespeare's plays. Every monkey has an equal chance of typing any given sequence of characters, regardless of their typing speed.