The letters L, M, N, O, P, Q, R, S and T in their order are substituted by nine integers 1 to 9 but not in that order. 4 is assigned to P. difference between P and T is 5, The difference between N and T is 3. What is the integer assigned to N? [2014/61]

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The letters L, M, N, O, P, Q, R, S and T in their order are substituted by nine integers 1 to 9 but not in that order. 4 is assigned to P. difference between P and T is 5, The difference between N and T is 3. What is the integer assigned to N? [2014/61]