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Five boys M, N, O, P, Q stand in a row in some order. Q is immediately to the right of M; N is immediately to the right of P; O is at the far right. The order from left to right is
AP, N, M, Q, O
BP, N, Q, M, O
CM, Q, P, N, O
DN, P, M, Q, O
Answer & Solution
Correct answer: A. P, N, M, Q, O
1. O is at far right, so O is fifth from left.
2. Q is immediately right of M, so MQ adjacent in that order.
3. N is immediately right of P, so PN adjacent in that order.
4. With O at position 5, and both MQ and PN as adjacent pairs, only P, N, M, Q, O fits.
_Source: ICAI BoS Foundation Paper 3, Ch 11 'Seating', p.4_
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