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- Question
Between two book-ends in your study are displayed your five favourite puzzle books. If you decide to arrange the five books in every possible combination and moved just one book every minute, how long would it take you?
Options- A. 1 hour
- B. 2 hours
- C. 3 hours
- D. 4 hours
- Correct Answer
- 2 hours
ExplanationClearly, number of ways of arranging 5 books = 5 ! = 5 x 4 x 3 x 2 x 1 = 120.So, total time taken = 120 minutes = 2 hours.
More questions
- 1. Choose the word which is different from the rest.
Options- A. Bajra
- B. Mustard
- C. Rice
- D. Wheat
- E. Barley Discuss
Correct Answer: Mustard
Explanation:
All except Mustard are foodgrains, while mustard is an oilseed.- 2. Find the odd one out:
Options- A. 263
- B. 111
- C. 242
- D. 551 Discuss
Correct Answer:
Explanation:
In all the numbers except 383, the middle digit is the product of the other two digits.
- 3. Find the odd one out:
Options- A. 21
- B. 69
- C. 81
- D. 83 Discuss
Correct Answer: 83
Explanation:
All are multiple of 3 except 83.
- 4. 16 : 56 :: 32 :?
Options- A. 96
- B. 112
- C. 120
- D. 128 Discuss
Correct Answer: 112
Explanation:
As, 16:56 = (2/7)Similarly, 32:112:(2/7)
- 5. 8 : 24 ::? : 32
Options- A. 5
- B. 6
- C. 10
- D. 8 Discuss
Correct Answer: 6
Explanation:
24 ? 2 x 4 = 832 ? 3 x 2 = 6
- 6. 'Uneasy' is to 'Quite" as 'Fit' is to
Options- A. Proper
- B. Suitable
- C. Pertinent
- D. Unfit Discuss
Correct Answer: Unfit
Explanation:
'Uneasy' and 'Quiet' are opposite to each other. Likewise, 'Fit' and 'Unfit' are opposite to each other
- 7. NA
Options- A. Desire
- B. Hope
- C. Want
- D. Belief Discuss
Correct Answer: Belief
Explanation:
Belief is a different word from others.
- 8. Statement :
1. Some clerks are poor;
2. A is poor
Conclusion :
I. A is clerk.
II. A has a large family.
Options- A. Both conclusions I and Ii
- B. Only conclusion II
- C. Only conclusion I follows.
- D. Neither conclusion I nor conclusion Ii follows. Discuss
Correct Answer: Neither conclusion I nor conclusion Ii follows.
Explanation:
It is not necessary that A is a clerk though he is poor.
- 9. Ant : Fly : Bee
Options- A. Termite
- B. Insect
- C. Lizard
- D. Small Discuss
Correct Answer: Insect
Explanation:
All are insects.
- 10. NA
Options- A. Radium
- B. Thorium
- C. Sodium
- D. Uranium Discuss
Correct Answer: Sodium
Explanation:
Except 'Sodium' all other are radioactive.
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