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P is heavier than S but lighter than U. The weight of Q is more than the weight of S and T, which is the lightest among all. U is not the heaviest item. R is lighter than P. U > P > S Or Q > S > T Also, T is the lightest among all and U is not the heaviest. So, Q must be the heaviest item among all. The final arrangement is as follows: Q > U(58) > P > S/R > R/S (35) > T If the difference between the weights of U and R is 23kg, then weight of R must be 35kg which means item S is heavier than R.
168, 178, ?, 273, 400, 618, 963
16, 9, ?, 114.25, 750.625, 6396.3125
8, 12, 20, 32, 52, ?, 136
84, 97, ?, 162, 214, 279
8, 27, 53, ?, 161, 285
7, 8, 18, 57, 232, ?
196, 196, 203, 229, 292, ?
?, 15, 45, 225, 1575, 14175