Use the standard forms of valid and invalid arguments to determine the validity of the arguments. Likewise, state the names of its standard form.  if a number is divisible by 2, then it is an even number. The number is even. Therefore, the number is divisible by 2.   If l buy the bag, then I will get a free wallet. if I geta free wallet, then I can save money. Therefore, if I saved money, then I bought the bag   If Alvin buys a new car, then he will not go on Philippine interisland tour. Alvin went to an interisland tour. Therefore, Alvin did not buy a new car

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Use the standard forms of valid and invalid arguments to determine the validity of the arguments. Likewise, state the names of its standard form.

 if a number is divisible by 2, then it is an even number. The number is even. Therefore, the number is divisible by 2.

 

If l buy the bag, then I will get a free wallet. if I geta free wallet, then I can save money. Therefore, if I saved money, then I bought the bag

 

If Alvin buys a new car, then he will not go on Philippine interisland tour. Alvin went to an interisland tour. Therefore, Alvin did not buy a new car

 

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