Directions: Study the following information carefully to answer the given questions:

Eight people M, N, O, P, Q, R, S and T were posted in the Indian police at different designations DSP, SP, SSP, IGP, DGP, SI, Inspector and Constable not necessarily in the same order with the respective level of seniority, i.e. DSP being the most senior and the constable being the most junior designation. Q was senior to R and was immediate junior to N. M is posted as IGP and was immediate senior to R. S is posted in position senior to T. Three people are having designation in between Q and P, and Q is senior to P. T was immediate senior to O.