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SSC CHSL 2020 · Question 40 of 91

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements. Statements: All computers are machines. No television is a computer. All televisions are instruments. Conclusions: I. Some instruments are machines. Il. Some machines are computers. III. Some televisions are machines.

Syllogism

  1. AOnly conclusion I follows
  2. BNone of the conclusions follow
  3. COnly conclusions II and III follow.
  4. DOnly conclusion II followsCorrect

Answer: D. Only conclusion II follows

Explanation

The least possible Venn diagram is: Conclusion: I. Some instruments are machines → False (it is possible but not definite as shown in the diagram above that no instrument is machine is possible). Il. Some machines are computers → True (all computers are machine, implies some machines are computers). III. Some televisions are machines → False (it is possible but not definite, as shown in the diagram above that no television is machine is possible). Hence, only conclusion II follows. Additional Information

Source: SSC CHSL 2020 (Tier-I) Prev. Year Paper (04-Aug-2021) (Shift 1) — prepp.in solved paper · reliable-secondary

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