- Reasoning - Home
- Reasoning - Overview
- Reasoning
Syllogism Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Syllogism. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 1 - Statements:
I. All singers are handsome.
II. Some handsome are weird.
Conclusions:
I. Some weird are handsome.
II. No singer is a weird.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : A
Explanation
All singers are handsome (A) + some handsome are weird (I) = A + I = no conclusion. Hence conclusion II does not follow. Again, some handsome are weird (I) conversion some weird are handsome (I). Hence conclusion I follows.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 2 - Statements:
I. All bacteria are germs.
II. Some germs are fungus.
Conclusions:
I. Some bacteria are fungus.
II. No bacteria is fungus.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : C
Explanation
Both the conclusions are mediate inferences. We know from table of mediate inference that A + I = no result. However, this conclusion forms the complementary pairs and comply the conditions, i.e. both the conclusions are I - E type and have the same subject and predicate. Hence either 1 or 2 follows.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 3 - Statements:
I. All families are neighbours.
II. No neighbour is a friend.
Conclusions:
I. No family is a friend.
II. At least some neighbours are families.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : E
Explanation
All families are neighbours (A) + no neighbour is a friend (E) = A + E = E = no family is a friend. Hence conclusion I follows. Again, all families are neighbours (A)- conversion - some neighbours are family (I). Hence conclusion II also follows.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 4 - Statements:
I. Some books are texts.
II. Some texts are copies.
Conclusions:
I. Some books are copies.
II. All copies are text.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : D
Explanation
Conclusion II is an immediate inference drawn from second statement and this is not valid as per rule of conversion. Conclusion I is a mediate inference. But as per table of mediate inference, I + I = no result. Hence none of the conclusions follow.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 5 - Statements:
I. Some banyans are oaks.
II. No oak is teak.
Conclusions:
I. Some oaks are banyans.
II. No banyan is teak.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : A
Explanation
Conclusion I is the immediate inference drawn from first statement. For mediate inference, I + E = O. Therefore, from the pair of statements, conclusion some banyan are not teak is valid. But this is not our conclusion. Hence only 1 follows.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 6 - Statements:
I. All granites are marbles.
II. Some marbles are tiles.
Conclusions:
I. Some tiles are marbles.
II. No granite is a tile.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : A
Explanation
All granites are marbles (A) + some marbles are tiles (I) = A + I = no conclusion. Hence conclusion II does not follow. Again, some marbles are tiles (I) - conversion - some tiles are marbles (I). Hence conclusion I follows.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 7 - Statements:
I. No knee is a heel.
II. All heels are ankles.
Conclusions:
I. At least some ankles are heels.
II. No ankle is a knee.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : A
Explanation
All heels are ankles (A) - conversion - some ankles are heels (I). Hence conclusion I follows. No knee is a heel (E) + all heels are ankles (A) = E + A = O ∗ = some ankles are not knees. Hence conclusion II does not follow.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 8 - Statements:
I. Some words are vowels.
II. Some consonants are vowels.
Conclusions:
I. All words are consonants.
II. At least some vowels are not consonants.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : D
Explanation
Some words are vowels (I) + (some consonants are vowels (I) - conversion -) some vowels are consonants (I) = I + I = no conclusion. Hence both the conclusions do not follow.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 9 - Statements:
I. Some muscles are hearts.
II. No heart is a cardiac.
Conclusions:
I. No muscle is a cardiac.
II. At least some muscles are cardiac.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : C
Explanation
Some muscles are hearts (I) + no heart is a cardiac (E) = I + E = O = some muscles are not cardiac. But conclusion I and II make a complementary pair (I - E). Hence either I or II follows. So option C is the right answer.
Two statements are given below followed by two conclusions numbered as I and II respectively. Consider the given statements as true even if they seem to be not. After reading all the conclusions conform which of the given conclusions logically follows, disregarding commonly known facts.
Q 10 - Statements:
I. No window is a glass.
II. Some glasses are doors.
Conclusions:
I. No window is a door.
II. Some doors are not windows.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : B
Explanation
No window is a glass (E) + some glasses are doors (I) = E + I = O ∗ = some doors are not windows. Hence conclusion II follows, but conclusion I does not follow.