A school is organizing guest lectures on three different subjects:
- Robotics
- English
- General Aptitude
The event is taking place over three days.The eight lectures are named P,Q,R,S,T,U,V and W,
- Robotics and English are to be covered in three lectures each while the remaining lectures are for general aptitude
- Lecture P, R and S to be on different days
- Lecture V and W should come on the same day
- Lecture Q cannot be put up with P, W and S
- Q and U lectures happen on the same day
- Lecture P is one Robotics and is held one day before R
- Lecture R cannot be on the last Day
- There are at least 3 lectures on day 1
I don't know how to solve it and please anyone guide me the steps, How to proceed these type of sum, which have to take as the first step