APPSC Group-I Preliminary Exam 2004 Solved Paper 2

Refer to the data below and answer the questions that follow:
The new television remote of the BPL television set has some unusual features. The T+2 button takes you to the channel which is two channels ahead of the current one (i.e. channel 1 to channel 3). The PP button takes you back to the channel which you switched on before the current one. The PR button takes you to the channel which is a prime numbered channel just ahead of the current channel. And, last but not the least, the MAG button instantaneously takes you to your favourite channel. Amit has made Star Plus (Channel no. 17) as the Magic channel (favourite).
(Use the additional data from the questions).