Fill in the Blanks Valid or Invalid Argument Fill the BlanksOnline version Valid or Invalid Argument Fill the Blanks by Olena Hawranick 1 ~ p ~ q p q → Valid Argument type 1 ( Modus Ponens ) : p ? - - - - - - - - - - - - q 2 q ~ ~q → Valid Argument type 2 ( Modus Tollens ) p ? - - - - - - - - - 3 Valid2 Invalid Valid1 a ? b a - - - - - - - - b Argument 4 Valid2 Invalid Valid1 a ? b b - - - - - - - - a Argumen t 5 Valid2 Invalid Valid1 a ? b ~b - - - - - - - - ~a Argumen t 6 Valid1 Invalid Valid2 a ? b ~a - - - - - - - - ~b Argumen t 7 b invalid valid valid2 c c b All college students read books . ( If you are a college student ( c ) then you read books ( b ) ) . I am a college student . So , I read books . ? _________ Valid or invalid ? 8 invalid b valid1 ~ c ~ b c valid All college students read books . ( If you are a college student ( c ) then you read books ( b ) ) . I do not read books . So , I am not a college student . ? ____ Valid or invalid ? 9 h valid s valid2 s h invalid If you are a student ( s ) then you do homework ( h ) . I am a student . So , I do homework . ? - - - - - - - - Valid or invalid ? 10 h ~ valid1 ~ s invalid s h valid If you are a student ( s ) then you do homework ( h ) . I do not do homework . So , I am not a student . ? - - - - - - - - Valid or invalid ? 11 a a invalid s valid2 s valid All squirrels like apples . ( If this creature is a squirrel ( s ) then she likes apples ( a ) ) . This creature is a squirrel . So , she likes apples . ? - - - - - - Valid or invalid ? 12 valid2 invali valid1 i r r i If it is raining ( r ) then we stay inside ( i ) . We stay inside . So , it is raining . ? - - - - - - Valid or invalid ? 13 invali ~ ~ h h p p valid1 valid2 If I promise to help ( p ) then I will help ( h ) . I did not promise to help . So , I wont help . ? - - - - - - - Valid or invalid ? 14 d Invali valid1 d h ~ ~ valid2 h If I have homework due tomorrow ( d ) then I do my homework ( h ) . I do not have homework due tomorrow . So , I won't do my homework . ? - - - - - - Valid or invalid ?