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- Question
- Only students or teacher visit the library.
(i) Rajesh is in the library.
(ii) Shiva is in the library.
(iii) Rajesh is a student.
(iv) Shiva may be a teacher.
Options- A. (i) (iii)
- B. (iii) (i)
- C. (ii) (iv)
- D. None
- Correct Answer
- (ii) (iv)
ExplanationThe statement has the logical connective 'only' and this does not imply that all students or teacher will visit the library.
- 1. When Anu comes first and Tanu comes second, Nikki and Sona cannot be selected in that order.
(i) Anu and Tanu came first.
(ii) Anu came first and Tanu came second
(iii) Nikki and Sona got selected in that order.
(iv) Sona and Nikki got selected in tht order.
Options- A. (i) (iv)
- B. (ii) (iii)
- C. (ii) (iv)
- D. (iv) (i) Discuss
- 2. Those visiting the Taj Mahal are either tourists or historians.
(i) Siya is historian or a tourist.
(ii) Riya is a tourist.
(iii) Siya is visiting the Taj Mahal
(iv) Riya is visiting the Taj Mahal
Options- A. (iv) (ii)
- B. (i) (iii)
- C. (iii) (i)
- D. Both (i) and (iii) Discuss
- 3. Only those living in Tilli are unfriendly.
(i) Rohan lives in Tilli.
(ii) Rohan lives in Rampur.
(iii) Rohan is unfriendly
(iv) Rohan may be unfriendly.
Options- A. (i) (iii)
- B. (ii) (iv)
- C. (iii) (i)
- D. None Discuss
- 4. Arjun falls asleep only if it is a soft bed.
(i) Arjun fell asleep.
(ii) Arjun remains awake.
(iii) it was a soft bed .
(iv) it was hard bed.
Options- A. (ii) (iv)
- B. (ii) (iii)
- C. (iii) (ii)
- D. (i) (ii) Discuss
- 5. Arya takes fries only one only if she gets it free with a cheese burger.
(i) Arya got a burger .
(ii) Arya had fries.
(iii) Arya got a cheese burger.
(iv) Arya did not have fries.
Options- A. (iii) (ii)
- B. (ii) (iii)
- C. (i) (ii)
- D. Both (a) and (b) Discuss
- 6. Only romantic boys give roses to girls.
(i) Ashok is romance.
(ii) Ashok gave roses to a girl.
(iii) Ashok did not give roses to a girl.
(iv) Ashok is a romantic boy.
Options- A. (ii) (iv)
- B. (i) (ii)
- C. (i) (iii)
- D. (ii) (i) Discuss
- 7. If you propose to the government, it will relent.
(i) Amit proposed to the government.
(ii) Amit relented.
(iii) Government relented.
(iv) Government did not relent.
Options- A. (i) (iii)
- B. (iii) (i)
- C. (iv) (ii)
- D. (ii) (iv) Discuss
- 8. All that flows have viscosity .
(i) it flows.
(ii) It does not flow.
(iii) it has viscosity.
(iv) It does not have viscosity.
Options- A. (iii) (i)
- B. (iv) (ii)
- C. Both (i) and (ii)
- D. None Discuss
- 9. If it happens on Sunday, it will happen again on Tuesday.
(i) it happened on Sunday.
(ii) it happened on Tuesday.
(iii) it did not happen on Sunday.
(iv) it did not happen on Tuesday.
Options- A. (iii) (ii)
- B. (iv) (iii)
- C. (ii) (i)
- D. (iii) (iv) Discuss
- 10. Whenever Shashi makes coffee, Asha puts in sugar.
(i) Shashi makes coffee.
(ii) Asha makes coffee.
(iii) Shashi puts in sugar.
(iv) Asha puts in sugar.
Options- A. (iv) (i)
- B. (i) (iv)
- C. (ii) (iii)
- D. (iii) (ii) Discuss
Logical Deduction problems
Search Results
Correct Answer: (ii) (iv)
Explanation:
The statement is of the type 'when A then B, when not B then not A' where A is 'Anu comes first and Tanu second' and B is 'Nikki and Sona cannot be selected in that order'.
Correct Answer: (iii) (i)
Explanation:
The statement is a simple 'either A or B'.
Correct Answer: (iii) (i)
Explanation:
The statement has the logical connective 'only' and it does not imply that all those living in Tilli are unfriendly.
Correct Answer: (ii) (iv)
Explanation:
The statement has the logical connective 'only' and it does not imply that Arjun will fall asleep every time there is a soft bed.
Correct Answer: Both (a) and (b)
Explanation:
The statement has the logical connective 'only and only' and this implies that when A then B and when B then A.
Correct Answer: (ii) (iv)
Explanation:
The statement has the logical connective 'only' and this does not imply that all romantic boys will give roses to girls but if a boy has given a rose to a girl, he must be romantic.
Correct Answer: (i) (iii)
Explanation:
The statement is of the type: if A then B.
Correct Answer: (iv) (ii)
Explanation:
The statement is of the type: if A (it flows) then B (have viscosity).
Correct Answer: (iv) (iii)
Explanation:
The statement is of the type: if A (happens on Sunday) then B (happen again on Tuesday).
Correct Answer: (i) (iv)
Explanation:
The statement is of the type: when A (Shashi makes coffee) then B (Asha puts sugar in it).
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