proposition and conclusions : logically solve a problem











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 If the proposition 'domestic animals are hardly ferocious' is taken to be 
false, which of the following proposition/propositions
can be claimed to be certainly true ?

Select the correct code:


Propositions :
(a) All domestic animals are ferocious
(b) Most of the domestic animals are ferocious
(c) No domestic animal is ferocious
(d) some domestic animals are non-ferocious



code:-



 (1) (b) only 
(2) (a) and (b)
(3) (a) only
(4) (c) and (d)


How to logically approach the problem ?



My workout:



'domestic animals are hardly ferocious' if taken into false it becomes 'most of the domestic animals are ferocious' so the answer is option (a)



is this the correct way to approach?



The correct answer given by the university is option 2 which is a and b. I donot know how the university derived this answer



source :
http://netexam.pmgurus.com/ugc-net-online-questions.aspx?q=solved-ugcnet-paper--july2018&gid=92&h=1&QID=6105&Qno=17










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  • what about all domestic animals are ferocious?
    – Venkat
    Jul 31 at 12:50










  • Hardly is taken as some not I.e particular negative. According to the square of opposition the true can be all domestic animals are ferocious via contradiction and some domestic animals are ferocious via sub alternation. Hope this helps you.
    – Saima Khan
    Nov 25 at 11:02










  • It may be helpful to provide some explanation or some reference to help the OP learn what the technical terms "contradiction" and "sub alternation" stand for.
    – mlc
    Nov 25 at 11:22















up vote
1
down vote

favorite












 If the proposition 'domestic animals are hardly ferocious' is taken to be 
false, which of the following proposition/propositions
can be claimed to be certainly true ?

Select the correct code:


Propositions :
(a) All domestic animals are ferocious
(b) Most of the domestic animals are ferocious
(c) No domestic animal is ferocious
(d) some domestic animals are non-ferocious



code:-



 (1) (b) only 
(2) (a) and (b)
(3) (a) only
(4) (c) and (d)


How to logically approach the problem ?



My workout:



'domestic animals are hardly ferocious' if taken into false it becomes 'most of the domestic animals are ferocious' so the answer is option (a)



is this the correct way to approach?



The correct answer given by the university is option 2 which is a and b. I donot know how the university derived this answer



source :
http://netexam.pmgurus.com/ugc-net-online-questions.aspx?q=solved-ugcnet-paper--july2018&gid=92&h=1&QID=6105&Qno=17










share|cite|improve this question
























  • what about all domestic animals are ferocious?
    – Venkat
    Jul 31 at 12:50










  • Hardly is taken as some not I.e particular negative. According to the square of opposition the true can be all domestic animals are ferocious via contradiction and some domestic animals are ferocious via sub alternation. Hope this helps you.
    – Saima Khan
    Nov 25 at 11:02










  • It may be helpful to provide some explanation or some reference to help the OP learn what the technical terms "contradiction" and "sub alternation" stand for.
    – mlc
    Nov 25 at 11:22













up vote
1
down vote

favorite









up vote
1
down vote

favorite











 If the proposition 'domestic animals are hardly ferocious' is taken to be 
false, which of the following proposition/propositions
can be claimed to be certainly true ?

Select the correct code:


Propositions :
(a) All domestic animals are ferocious
(b) Most of the domestic animals are ferocious
(c) No domestic animal is ferocious
(d) some domestic animals are non-ferocious



code:-



 (1) (b) only 
(2) (a) and (b)
(3) (a) only
(4) (c) and (d)


How to logically approach the problem ?



My workout:



'domestic animals are hardly ferocious' if taken into false it becomes 'most of the domestic animals are ferocious' so the answer is option (a)



is this the correct way to approach?



The correct answer given by the university is option 2 which is a and b. I donot know how the university derived this answer



source :
http://netexam.pmgurus.com/ugc-net-online-questions.aspx?q=solved-ugcnet-paper--july2018&gid=92&h=1&QID=6105&Qno=17










share|cite|improve this question















 If the proposition 'domestic animals are hardly ferocious' is taken to be 
false, which of the following proposition/propositions
can be claimed to be certainly true ?

Select the correct code:


Propositions :
(a) All domestic animals are ferocious
(b) Most of the domestic animals are ferocious
(c) No domestic animal is ferocious
(d) some domestic animals are non-ferocious



code:-



 (1) (b) only 
(2) (a) and (b)
(3) (a) only
(4) (c) and (d)


How to logically approach the problem ?



My workout:



'domestic animals are hardly ferocious' if taken into false it becomes 'most of the domestic animals are ferocious' so the answer is option (a)



is this the correct way to approach?



The correct answer given by the university is option 2 which is a and b. I donot know how the university derived this answer



source :
http://netexam.pmgurus.com/ugc-net-online-questions.aspx?q=solved-ugcnet-paper--july2018&gid=92&h=1&QID=6105&Qno=17







logic






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share|cite|improve this question













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edited Aug 1 at 3:12

























asked Jul 31 at 12:21









Venkat

1235




1235












  • what about all domestic animals are ferocious?
    – Venkat
    Jul 31 at 12:50










  • Hardly is taken as some not I.e particular negative. According to the square of opposition the true can be all domestic animals are ferocious via contradiction and some domestic animals are ferocious via sub alternation. Hope this helps you.
    – Saima Khan
    Nov 25 at 11:02










  • It may be helpful to provide some explanation or some reference to help the OP learn what the technical terms "contradiction" and "sub alternation" stand for.
    – mlc
    Nov 25 at 11:22


















  • what about all domestic animals are ferocious?
    – Venkat
    Jul 31 at 12:50










  • Hardly is taken as some not I.e particular negative. According to the square of opposition the true can be all domestic animals are ferocious via contradiction and some domestic animals are ferocious via sub alternation. Hope this helps you.
    – Saima Khan
    Nov 25 at 11:02










  • It may be helpful to provide some explanation or some reference to help the OP learn what the technical terms "contradiction" and "sub alternation" stand for.
    – mlc
    Nov 25 at 11:22
















what about all domestic animals are ferocious?
– Venkat
Jul 31 at 12:50




what about all domestic animals are ferocious?
– Venkat
Jul 31 at 12:50












Hardly is taken as some not I.e particular negative. According to the square of opposition the true can be all domestic animals are ferocious via contradiction and some domestic animals are ferocious via sub alternation. Hope this helps you.
– Saima Khan
Nov 25 at 11:02




Hardly is taken as some not I.e particular negative. According to the square of opposition the true can be all domestic animals are ferocious via contradiction and some domestic animals are ferocious via sub alternation. Hope this helps you.
– Saima Khan
Nov 25 at 11:02












It may be helpful to provide some explanation or some reference to help the OP learn what the technical terms "contradiction" and "sub alternation" stand for.
– mlc
Nov 25 at 11:22




It may be helpful to provide some explanation or some reference to help the OP learn what the technical terms "contradiction" and "sub alternation" stand for.
– mlc
Nov 25 at 11:22















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