UCAT/ UKCAT Question Analysis - Q51
Which of the following syllogism is incorrect?
A. No baker is tight-fisted. All the bakers living in the house are bakers. Therefore no one in this house is tight-fisted.
B. All peacocks are proud. All birds in this park are peacocks. Therefore all birds in this park are proud.
C. Catepillars are not edible. Some worms are edible. Therefore some worms are not catepillars.
D. All good speakers are talkative. Some clowns are good speakers. Therefore some clowns aren't talkative.
Answer: D
Explanation: As we are told that all good speakers are talkative, we can conclude that the clowns who are good speakers will be talkative. Yet, we know nothing about the people who are not good speakers, and we cannot conclude whether the clowns who are not good speakers are talkative or not.
The other options:
A: Should everyone's a baker and no baker is tight-fisted then we can safely deduce that no one is tight-firsted.
B: Should all birds are peacocks and all peacocks are proud, all birds should be proud.
C: What we can conclude from the two points: worms that are edible cannot be catepillars. Nothing can be concluded about the worms that are not edible. The fact that two objects possess the same characteristics does not mean they are linked.