In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusion logically follows the given statements.

Statements :

I. All O are C.

II. All C are D.

Conclusions :

I. Some C are O.

II. Some D are C.

III. No O is D.

This question was previously asked in
SSC CGL 2022 Tier-I Official Paper (Held On : 13 Dec 2022 Shift 4)
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  1. Both conclusions II and III follows
  2. All conclusion follows
  3. Both conclusions I and II follows
  4. Both conclusions I and III follows

Answer (Detailed Solution Below)

Option 3 : Both conclusions I and II follows
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Detailed Solution

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The least possible Venn diagram for the given statements is as shown below :
F1 Savita SSC 4-5-23 D26

Conclusions:

I. Some C are O → Follow (As all O are C. So, as whole O comes in C therefore some C are O is definitely true)

II. Some D are C → Follow (As all C are D. So, as whole C comes in D therefore some D are C is definitely true)

III. No O is D → Does not follow (As all O are C and all C are D. So, as no direct negative or cross relation is given between O and D therefore it is definitely false)

∴ Here, Both conclusions I and II follows.

Hence, the correct answer is "Both conclusions I and II follows"

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