Some bus route questions - no need to recall what happened
donkey months ago. 
1) Which is/are the pair(s) of bus stops where the services that
ply one of them is totally different from those that ply the one on
the opposite side of road? Name the services.
2) Which 2 services duplicate each other the most in terms of fare
stages?
a) When taking the lower fare stage of the 2 services
b) When taking the higher fare stage of the 2 services
3) Which 3 services duplicate each other the most in terms of fare
stages?
4) Which pair(s) of bus routes meets and separates the most number
of times? Must have common bus stops when they meet.
(Eg. 139 and 145 meets at Toa Payoh, separates and meets again at
Balestier Rd, separates and meets again at Alexandra Road before
separating again. Therefore they meets and separates a total of 3
times)
5) A and B are bus stop/interchange/terminal. Which point A to
point B has the most number of bus services plying, all using
different routes. What are the services?
(Eg. JE Int to Pasir Panjang Road has 2 services, 51 and 143, using
different routes)
The answers I have in mind may not be the best answers. Feel free
to post here with your better answers(if any).
4) the pair of jokers 56 and 57? 
or the jokers 14 and 196? 