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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 jazz are melody.
II. No melody is a rock.
Conclusions:
I. No jazz is a rock.
II. At least some melody are jazz.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : E
Explanation
All jazz are melody (A) + no melody is a rock (E) = A + E = E = no jazz is a rock. Hence conclusion I follows. Again, all jazz are melody (A) conversion some melody are jazz (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 2 - Statements:
I. Some green are white.
II. Some white are black.
Conclusions:
I. Some greens are black.
II. All black are white.
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 conclusion 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. No project is a construction.
II. All constructions are manufacture.
Conclusions:
I. At least some manufacture are construction.
II. No cover is a project.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : A
Explanation
All constructions are manufacture (A) conversion some manufacture are constructions (I). Hence conclusion I follows. No project is a construction (E) + all construction are manufacture (A) = E + A = O ∗ = some manufacture are not project. 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 4 - Statements:
I. Some dirty are mud.
II. Some mud are clean.
Conclusions:
I. Some mud are dirty.
II. Some clean are mud.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : E
Explanation
Both the conclusions are immediate inferences drawn from statements and follow the rule of conversion.
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 clowns are entertainers.
II. No entertainer is a joker.
Conclusions:
I. No clown is a joker.
II. At least some clowns are jokers.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : C
Explanation
Some clowns are entertainers (I) + no entertainer is a joker (E) = I + E = O = some clowns are not jokers. 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 6 - Statements:
I. No samsung is a nokia.
II. Some nokia are oppo.
Conclusions:
I. No samsung is a oppo.
II. Some oppo are not samsung.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : B
Explanation
No samsung is a nokia (E) + some nokia are oppo (I) = E + I = O ∗ = some oppo are not samsung. Hence conclusion II only follows, but conclusion I 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 7 - Statements:
I. No tree is a house.
II. Some houses are ply.
Conclusions:
I. No tree is a ply.
II. Some plies are not trees.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : B
Explanation
No tree is a house (E) + some houses are ply (I) = E + I = O ∗ = some ply are not trees. Hence conclusion II follows. But conclusion I 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 apples are oranges.
II. No orange is black.
Conclusions:
I. Some oranges are apples.
II. No apple is black.
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 apples are not black is valid. But this is not our conclusion. Hence only 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 9 - Statements:
I. Some cricket are football.
II. Some football are hockey.
Conclusions:
I. Some football are cricket.
II. Some hockey are football.
A - If only conclusion I follows.
B - If only conclusion II follows.
C - If either conclusion I or II follows.
Answer : E
Explanation
Both the conclusions are immediate inferences drawn from statements and follow the rule of conversion.
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.