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:
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.
ii) Yes, No, Yes, Yes
iii) No, Yes, Yes, Yes
Can someone give a method to tackle this question please. Thanks