Assume the statements are true.
Statements: All oars are sails. All anchors are sails.
Conclusions:
I. Some oars are anchors.
II. No oar is an anchor.

Only II followsCorrect answerYour answerEither I or II followsCorrect answerYour answerNeither I nor II followsCorrect answerYour answerBoth I and II followCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

Oars and anchors both sit inside the sail circle. Two circles inside a bigger one may overlap or may be apart.
So neither 'Some oars are anchors' nor 'No oar is an anchor' is definite.
They form a complementary Some/No pair on oars and anchors, so exactly one must be true: either I or II follows.

Worth noting

Sharing a bigger group does not link two groups. 'All X are Y, all Z are Y' says nothing definite about X and Z.

Concept: Two All statements with a shared predicate; either-or
Typical timeTypical: 70 s
Your timeYours: —

The rule this testsTwo statements

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Ten questions from Syllogisms, at your own pace.

Assume the statements are true.Statements: All oars are sails. All anchors are sails.Conclusions:I. Some oars are anchors.II. No oar is an anchor.

Explanation

Assume the statements are true.
Statements: All oars are sails. All anchors are sails.
Conclusions:
I. Some oars are anchors.
II. No oar is an anchor.