Seven people, I, J, K, L, O, P and Q are sitting in a row, facing north. Only J sits to the left of Q. Only four people sit between J and I. Only O sits between P and K and P is not an immediate neighbour of I. Who sits at the extreme right end of the row?

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NTPC Graduate Tier 1

2025 • 06 Jun, 2025 • Shift-2

Seven people, I, J, K, L, O, P and Q are sitting in a row, facing north. Only J sits to the left of Q. Only four people sit between J and I. Only O sits between P and K and P is not an immediate neighbour of I. Who sits at the extreme right end of the row?

Correct Answer

Fixing the Left End: The phrase 'Only J sits to the left of Q' is a highly definitive geometric anchor. It firmly means J must be at the extreme left slot (posi......

💡 Analysis & Explanation

Fixing the Left End ▼

The phrase 'Only J sits to the left of Q' is a highly definitive geometric anchor. It firmly means J must be at the extreme left slot (position 1) and Q is immediately next to him occupying position 2.

Placing Correlated Members ▼

Since exactly four people sit structurally between J and I, and J is pinned at position 1, I must logically and necessarily be placed at position 6 (skipping 2, 3, 4, 5).

Resolving the Trio ▼

The required sequence P-O-K or K-O-P must slide into the three consecutive empty spatial slots (positions 3, 4, and 5). Because P strictly cannot sit immediately next to I (position 6), K must safely take position 5, pushing O to 4, and P to 3.

Identifying the Right End ▼

Position 7, constituting the absolute extreme right end, remains the solitary vacant spot. It must mathematically be occupied by the single remaining person, L.

Conclusion ▼

L confidently sits at the extreme right end.

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Seven people, I, J, K, L, O, P and Q are sitting in a row, facing north. Only J sits to the left of Q. Only four people sit between J and I. Only O sits between P and K and P is not an immediate neighbour of I. Who sits at the extreme right end of the row?