At an Electronic Data Processing Unit, five out of the eight program sets P, Q, R, S, T, U, V and W are to be operated daily. On any one day, except for the first day of a month, only three of the program sets must be the ones that were operated on the previous day. The program operating must also satisfy the following conditions :
(i). If program P is to be operated on a day, V cannot be operated on that day.
(ii). If Q is to be operated on a day, T must be one of the programs to be operated after Q.
(iii). If R is to be operated on a day, V must be one of the programs to be operated after R.
(iv). The last program to be operated on any day must be either S or U.
If the program sets R and W are to be operated on the first day, which of the following could be the other programs on that day ?
Since R is operated, so V must also be operated.
Also, S or U is to be taken at the end.
So, the possible combinations are Q, S, V and T, S, V.
Now, Q must have T as one of the programs after it, which is not possible. So, Q, S, V is incorrect.