Question: Valid or Invalid 9- If Mona is happy, she has pizza as her supper. But she has pizza as her supper only if she doesn't
Valid or Invalid
9- If Mona is happy, she has pizza as her supper. But she has pizza as her supper only if she doesn't go to the gym. Furthermore, she goes to the gym if she is not watching TV. Therefore, if Mona is not watching TV, she is not happy
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