Logical Reasoning for NTA UGC NET JRF Paper 1

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Q1. In the series 1, 6, 15, 28, 45, ………… the next term will be:

(a) 66
(b) 76
(c) 56
(d) 84

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Answer 1
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Q2. The next term in the series ABD, DGK, HMS, MTB, ………. is:

(a) NSA
(b) SBL
(c) PSK
(d) RUH

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Answer 2
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Q3. In certain code, “COVALENT” is coded as BWPDUOFM. The code of “ELEPHANT” will be:

(a) MFUIQRTW
(b) QMUBIADH
(c) QFMFUOBI
(d) EPHNTEAS

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Answer 3
Explanation: “COVALENT” is coded as BWPDUOFM.
COVA and LENT reverse these alphabets and take the next alphabets in each
AVOC = BWPD and TNEL = UOFM
Similarly, ELEP and HANT
PELE = QFMF and TNAH = UOBI
So, the code of “ELEPHANT” = QFMFUOBIQ
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Q4. Ajay is a friend of Rakesh. Pointing to an old man Ajay asked Rakesh who is he? Rakesh said “His son is my son’s uncle”. The old man is related to Rakesh as:

(a) Grandfather
(b) Father-in-law
(c) Father
(d) Uncle

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Answer 3
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Q5. A postman walked 20 m straight from his office, turned right and walked 10 m. After turning left he walked 10 m and after turning right walked 20 m. He again turned right and walked 70 m. How far he is from his office?

(a) 50 m.
(b) 40 m.
(c) 60 m.
(d) 20 m.

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Answer 1
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Q6. It is Truism to say that no one was there when life first appeared on earth. Any assertion about life’s origin, thus, should be treated as a theory. The above two statements constitute:

(a) A historical explanation
(b) A narrative
(c) An argument
(d) A conjecture

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Answer 3
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Q7. Given below are four statements. Among them two are related in such a way that they can both be true but they cannot both be false. Select the code that indicates those two statements: Statements:
(i) Honest people never suffer.
(ii) Almost all honest people do suffer.
(iii) Honest people hardly suffer.
(iv) Each and every honest person suffers

(a) (i) and (ii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (ii) and (iii)

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Answer 4
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Q8. A deductive argument is invalid if:

(a) Its premises and conclusion are all true.
(b) Its premises and conclusion are all false.
(c) Its premises are all false but its conclusion is true.
(d) Its premises are all true but its conclusion is false.

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Q9. Given below are two premises (I and II). From those two premises four conclusions (i), (ii), (iii) and (iv) are drawn. Select the code that states the conclusion/conclusions drawn validly (taking the premises singularly or jointly).
Premises:
(I) All bats are mammals.
(II) No birds are bats.
Conclusions:
(i) No birds are mammals.
(ii) Some birds are not mammals.
(iii) No bats are birds.
(iv) All mammals are bats.

(a) (i) only
(b) (i) and (ii) only
(c) (iii) only
(d) (iii) and (iv) only

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Q10. Just as melting ice – cubes do not cause a glass of water to overflow, melting sea – ice does not increase oceanic volume.
What type of argument is it?

(a) Analogical
(b) Hypothetical
(c) Psychological
(d) Statistical

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