# O level Logic 2017 part 3

#### Quiz Description

The obverse of the converse of: “Some lawyers are honest people “Is :

Correct
• Some honest people are lawyer
• Some honest people are not lawyer
• Some lawyer are dishonest people
• Some non-lawyer are dishonest people

Read off this venn diagram into a valid syllogism:

Correct
• All mourner are pirate. No mourners are spectators. Therefore , no spectators are pirates
• No spectators are mourners . All pirates are mourner. Therefore, no spectators are pirates
• No mourners are spectators . All pirates are mourners . Therefore, no spectators are pirates
• All pirates are mourners . No mourners are spectators .Therefore, no spectators are pirates

In reading off the venn diagram in arguments, which of the following s false?

Correct
• The P and S circles form the minor premise
• The M and P circles form the major premise
• The M and S circles form the Minor premise
• The P and M circles form the major premise

A second order enthymeme is one in which:

Correct
• the minor premise is followed by the conclusion with ‘since”
• The conclusion is followed by the major premise with “since ”
• The major premise is followed by the conclusion with “because”
• the conclusion is followed by the minor premise with “because “

In the sortie, the suppressed intermediate conclusion becomes the:

Correct
• Major premise of the subsequent argument
• First figure of the subsequent argument
• The conclusion of the subsequent argument
• The minor premise of the subsequent argument

The antecedent of the conclusion of a pure hypothetical syllogism is the:

Correct
• Antecedent of the major premise
• Consequent of the minor premise
• Consequent of the minor premise
• Antecedent of the minor premise

Identify the following argument :”John is either guilty or innocent . John is innocent. Therefore, he is not guilty”.

Correct
• Modus tollens
• Modus ponendo tollens
• Modus tollendo ponens
• Modus Ponens

Which of the following illustrates a valid Modus Tollens?

Correct
• Conclusion affirms the antecedent
• Minor premise denies the antecedent
• Conclusion denies the subsequent
• Minor premise denies the consequent