1. Six friends P–U play chess, each with everyone once. Total games = ?
A) 12
B) 15
C) 20
D) 25
B) 15
C) 20
D) 25
Answer: B
Explanation: Formula for combinations: nC2 = 6C2 = 15.
Explanation: Formula for combinations: nC2 = 6C2 = 15.
2. Identify reasoning: “He is a lawyer because he argues well.”
A) Circular reasoning
B) Post hoc
C) Straw man
D) False dilemma
B) Post hoc
C) Straw man
D) False dilemma
Answer: A
Explanation: Premise presupposes conclusion (argues well → lawyer) with no external support.
Explanation: Premise presupposes conclusion (argues well → lawyer) with no external support.
3. Two trains leave stations 180 km apart at 8 am; one at 40 km/h, other at 50 km/h. When do they meet?
A) 9:30 am
B) 10 am
C) 10:15 am
D) 10:30 am
B) 10 am
C) 10:15 am
D) 10:30 am
Answer: B
Explanation: Relative speed = 90 km/h. Time = 180/90 = 2 hr. So 10 am.
Explanation: Relative speed = 90 km/h. Time = 180/90 = 2 hr. So 10 am.
4. Which inference is valid? Premises:
- All contracts need offer.
- Some valid agreements lack consideration.
- All agreements with consideration are contracts.
A) Some contracts lack consideration
B) All offers are contracts
C) Some agreements are not contracts
D) All valid agreements are contracts
B) All offers are contracts
C) Some agreements are not contracts
D) All valid agreements are contracts
Answer: C
Explanation: (3) says: consideration agreements ⊆ contracts. (2) gives: some valid agreements ¬consideration → cannot be contracts → C.
Explanation: (3) says: consideration agreements ⊆ contracts. (2) gives: some valid agreements ¬consideration → cannot be contracts → C.
5. 1 4 9 16 …?
A) 20
B) 25
C) 30
D) 36
A) 20
B) 25
C) 30
D) 36
Answer: B
Explanation: Squares of natural numbers: 1²,2²,3²,4² → next is 5² = 25.
Explanation: Squares of natural numbers: 1²,2²,3²,4² → next is 5² = 25.
6. Analogy: “Leg : Walk :: Wing : ?”
A) Fly
B) Bird
C) Feathers
D) Jump
B) Bird
C) Feathers
D) Jump
Answer: A
Explanation: Function mapping: leg enables walk; wing enables fly.
Explanation: Function mapping: leg enables walk; wing enables fly.
7. All members of a committee speak English or Hindi (or both). 12 speak English, 8 speak Hindi, 4 speak both. How many members?
A) 16
B) 20
C) 24
D) 28
B) 20
C) 24
D) 28
Answer: A
Explanation: There are 12 people who speak English, 8 who speak Hindi, and 4 who speak both. To avoid double-counting those who speak both, subtract that group from the total.
So, 12+8−4=1612 + 8 – 4 = 1612+8−4=16 members in all.
Explanation: There are 12 people who speak English, 8 who speak Hindi, and 4 who speak both. To avoid double-counting those who speak both, subtract that group from the total.
So, 12+8−4=1612 + 8 – 4 = 1612+8−4=16 members in all.
8. Spot flaw: “Whenever I wear blue, it rains. So my shirt causes rain.”
A) False cause
B) Appeal to authority
C) Equivocation
D) Analogy error
B) Appeal to authority
C) Equivocation
D) Analogy error
Answer: A
Explanation: Correlation ≠ causation.
Explanation: Correlation ≠ causation.
9. If TODAY is coded as UQGBZ (reverse alphabet +2), how is LOGIC coded?
A) NQIKE
B) NQKGE
C) MQLGE
D) NQJGE
B) NQKGE
C) MQLGE
D) NQJGE
Answer: B
Explanation: Each letter moved forward by 2 then written backward.
Explanation: Each letter moved forward by 2 then written backward.
10. Two premises:
- If witness credible, testimony accepted.
- Testimony accepted.What is valid? A) Witness credibleB) Witness not credibleC) Nothing followsD) Testimony unreliable
Answer: C
Explanation: Accepting consequent is invalid; no conclusion.
Explanation: Accepting consequent is invalid; no conclusion.
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Ruchika Mohapatra
Contributing author
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