Question: Is the following argument valid? Sound? If it is valid, give an informal proof of it . If it is not valid, give an informal

Is the following argument valid? Sound? If it is valid, give an informal proof of it

.

If it is not

valid, give an informal counterexample to it

.

All computer scientists are rich. Anyone who knows how to program a computer is a computer scientist. Bill Gates is rich. Therefore, Bill Gates knows how to program a computer.

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