All MCQs

The relation is O > M > N > P.
Therefore, O is definitely more expensive than M.

The complete order is D, B, A, C, E.
A occupies the third, or middle, position.

With Z first, X cannot be second because W must sit to X's left.
The only valid order is Z-W-X-Y, so W is second.

A lies somewhere before position 4 and G somewhere after position 4.
Therefore, A must be left of G.

The only seat next to P at the far left is position 2.
Because Q is not next to P, Q cannot sit second.

C occupies the seat immediately right of B.
If B is fifth, C is sixth.

The order includes X before Y before W before Z.
Therefore, X must be left of W.

D is in position 5.
Two seats to its left is position 3.

K is immediately to the left of J.
With J fourth, K is third.

The chain A-B-C-D must remain in that order.
With E at the far left, the chain fills positions 2 to 5, placing D at the far right.

H is sixth from the left in a seven-seat row.
Positions 3, 4, and 5 lie between G and H.

The condition explicitly places A immediately beside C.
No other person can occupy that adjacent position.