Hi I have attached the question as a word file. I have done what I think are the answers, but I do not have the solutions, or systematic method to solve them, which is what I am looking for.
These are my answers:
i)
a) 16 - I counted the different arrangements there area of all reaching the left side, right side (these are the same), at the top, and remaining at the bottom.
b) 0
c) 16
ii) Yes, No, Yes, Yes
iii) No, Yes, Yes, Yes
Can someone give a method to tackle this question please. Thanks