1. Represent the common form for the argument in (a) using letters to stand for the component sentences, and fill in the blanks so that the argument part (b) has the same logical form as in part (a). (a) If all programs contain errors, then this program contains an error. This program does not contain an error Therefore, it is not the case that all programs contain errors. (b) If then 2 is not odd. Therefore, it is not the case that all prime numbers are odd . 2. Use valid argument forms to deduce the conclusion from the premises, giving the reason for each step