Logical Games— Concepts, Formulas & Shortcuts
- Write each rule in shorthand before touching the options.
- Test the options against the most restrictive rule first — it eliminates fastest.
- "If A then B" also means "if not B then not A"; the reverse is NOT implied.
- Distinguish rules that fix positions from rules that merely forbid combinations.
- For "which could be true", one valid arrangement is enough to confirm.
- For "which must be true", one counter-arrangement is enough to reject.
Logical Games Practice Questions with Answers
Attempt each question first, then open the explanation. All 10 questions below are free to read and require no signup.
Q1.Rule: If P is selected, Q must also be selected. If Q is NOT selected, which follows?
Moderate- AP is selected
- BP is not selected
- CR is selected
- DNothing follows
Logical Games question 1 of 10+Show Answer & Explanation
Answer: B. P is not selected
Explanation: The contrapositive of "P → Q" is "not Q → not P".
Q2.Rule: A and B cannot be chosen together. If A is chosen, then:
Easy- AB must be chosen
- BB cannot be chosen
- CB may be chosen
- DNothing follows
Logical Games question 2 of 10+Show Answer & Explanation
Answer: B. B cannot be chosen
Explanation: The rule forbids the pair, so choosing A excludes B.
Q3.Five friends sit in a row. M sits at one end and N sits next to M. Which must be true?
Moderate- AN sits at an end
- BN sits second from that end
- CM sits in the middle
- DN and M are separated
Logical Games question 3 of 10+Show Answer & Explanation
Answer: B. N sits second from that end
Explanation: If M occupies an end and N is adjacent, N must be in the second position from that end.
Q4.Rule: At least two of X, Y and Z must be selected. If X is rejected, then:
Moderate- AY and Z must both be selected
- BOnly Y is selected
- COnly Z is selected
- DNone is selected
Logical Games question 4 of 10+Show Answer & Explanation
Answer: A. Y and Z must both be selected
Explanation: With X out, the minimum of two can only be met by taking both Y and Z.
Q5.Rule: C is seated immediately before D. Which arrangement is impossible?
Easy- AC, D, E
- BE, C, D
- CD, C, E
- DC, D
Logical Games question 5 of 10+Show Answer & Explanation
Answer: C. D, C, E
Explanation: In "D, C, E" the order is reversed, breaking the rule that C comes immediately before D.
Q6.Rule: If it rains, the picnic is cancelled. The picnic took place. Which follows?
Moderate- AIt rained
- BIt did not rain
- CIt may have rained
- DNothing follows
Logical Games question 6 of 10+Show Answer & Explanation
Answer: B. It did not rain
Explanation: The picnic happening means it was not cancelled, and by contraposition it did not rain.
Q7.Four books are stacked. The red book is above the blue, and the blue is above the green. Which must be true?
Easy- ARed is above green
- BGreen is above red
- CBlue is on top
- DGreen is on top
Logical Games question 7 of 10+Show Answer & Explanation
Answer: A. Red is above green
Explanation: Red > blue > green in the stack, so red is above green by transitivity.
Q8.Rule: Exactly one of A, B and C is chosen. If B is chosen, then:
Easy- AA and C are both rejected
- BA is chosen too
- CC is chosen too
- DNothing follows
Logical Games question 8 of 10+Show Answer & Explanation
Answer: A. A and C are both rejected
Explanation: "Exactly one" means the other two must be excluded.
Q9.Six people sit around a circular table. If P sits directly opposite Q, how many people sit between them on each side?
Moderate- AOne
- BTwo
- CThree
- DFour
Logical Games question 9 of 10+Show Answer & Explanation
Answer: B. Two
Explanation: In a circle of six, opposite seats are three apart, leaving two people on each side.
Q10.Rule: If S is in the team, T is not. T is in the team. Which follows?
Moderate- AS is in the team
- BS is not in the team
- CBoth are in
- DNeither is in
Logical Games question 10 of 10+Show Answer & Explanation
Answer: B. S is not in the team
Explanation: By contraposition, T's presence excludes S.
Logical Games — Frequently Asked Questions
Should I build every possible arrangement?+
Rarely. Testing the answer options against the rules is far quicker. Build arrangements only when the question asks what must be true in every case.
What is the commonest logical error in these questions?+
Reversing a conditional. "If A is selected then B is selected" does not mean B's selection forces A's. Only the contrapositive — if B is out, A is out — is valid.
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