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Statements: All pens are books. Some books are tables. No table is a chair. Conclusions: I. Some tables are books. II. Some books are not c…

805Medium DSSSB TGT Computer Science 0 replies

Statements: All pens are books. Some books are tables. No table is a chair. Conclusions: I. Some tables are books. II. Some books are not chairs. III. Some pens are tables. Which of the conclusions follow?

  • AOnly I
  • BOnly I and II
  • COnly II and III
  • DAll I, II and III
Correct answer: B

Explanation

I follows by conversion of "Some books are tables"; II follows from (Some books are tables) + (No table is a chair); III does not follow as the books that are tables may not be pens.

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