This is phi questions!!!!!! please help

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True/False 1. An argument's conclusion is its goal or endpoint. 2. If an argument's premises entail its conclusion, then its conclusion must be true. 3. A valid argument is one whose premises entail its conclusion. 4. All valid arguments have true conclusions. 5. All invalid arguments have at least one false premise. 6. Sound arguments always have true premises. 7. Some invalid arguments are sound. 8. All unsound arguments are invalid