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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 follows from the statements.

Statements:

1. All plumbers are men.

2. Some men are electricians.

3. No electrician is a cook.

Conclusions:

1. Some plumbers are cooks.

2. Some plumbers are not cooks.

3. Some men are not cooks. 

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NTPC CBT-I (Held On: 29 Dec 2020 Shift 2)
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  1. None of the conclusions follows.
  2. Only conclusions 2 and 3 follow 
  3. Only conclusion 3 follows.
  4. Only conclusions 1 and 2 follow 

Answer (Detailed Solution Below)

Option 3 : Only conclusion 3 follows.
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Detailed Solution

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The least possible Venn diagram is:          

F1 Chitranshi Madhu 07.10.21 D10

Conclusions:

1. Some plumbers are cooks. → False (As, there is no definite relation between plumbers and cooks. Hence, false)

2. Some plumbers are not cooks. → False (As, there is no definite relation between plumbers and cooks. Hence, false)

3. Some men are not cooks. → True (As, Some men are electricians and No electrician is a cook → Some men who are electricians are not cooks)

Hence, only conclusion 3 follows.

Confusion Points 1. When There is no relation given between the two elements, in that case, we cannot define their relation so here between a plumber and cook we cannot define relation so it will not follow here.

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Q1.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 conclusion(s) logically follow(s) from the statements. Statements: All jacks are kings. All kings are queens. Conclusions: (I) Some queens are jacks. (II) All jacks are queens.
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Q5.Read the given statements and conclusions carefully. The statements you make are to be believed as true, even if they appear to differ from generally known facts. You are to decide which of the given conclusions logically follows from the given statements. Statement: All tables are chairs. No desks are chairs. All benches are chairs. Conclusions: (I): Some benches are desks. (II): No table is desk.
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Q1.Directions: In the following questions, few statements are given and these statements are followed by two conclusions numbered i and ii. You ha Choose, (A) Only (i) conclusion follows (B) Only (ii) conclusion follows (C) Neither (i) nor (ii) follows (D) Both (i) and (ii) follow (E) Either (i) or (ii) follows Statements: All materials are products. All products are goods. All goods are bad. Conclusions: i) All materials are goods. ii) All products are bad.   
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