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UPSC 2007: Six faces of a cube are numbered from 1 to 6, each face carrying one different number. Further, 1. The face 2 is opposite to the face 6. 2. The face 1 is opposite to the face 5. 3. The face 3 is between the face 1 and face 5. 4. The face 4 is adjacent to the face 2. Which one of the following is correct?
(a)The face 2 is adjacent to the face 3
(b)The face 6 is between the face 2 and the face 4
(c)The face 1 is between the face 5 and the face 6
(d)None of the above
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Not attemptedCorrect Answer: (a) The face 2 is adjacent to the face 3
Faces 2 ↔ 6 and 1 ↔ 5 are opposite. Face 3 must be one of the four side faces adjacent to both 1 and 5. Since 2 is a side face (its opposite 6 is another side face), the only faces opposite 2 are 6; all other side faces—including face 3—are adjacent to 2. Hence statement (a) ‘Face 2 is adjacent to face 3’ is necessarily true, while (b) and (c) conflict with the fixed opposite pairs, making option (a) correct.
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Frequently Asked Questions
What is the correct answer to this UPSC 2007 Science & Technology question?▼
The correct answer is option (a): The face 2 is adjacent to the face 3. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Logical Reasoning & Puzzles question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2007, GS Paper 1, as Question 141. It falls under Science & Technology > Logical Reasoning & Puzzles.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Logical Reasoning & Puzzles?▼
UPSC has asked 71 questions from Logical Reasoning & Puzzles (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.