Suppose that vehicles taking a particular free way exit cars

Suppose that vehicles taking a particular free way exit cars turn right (R), turn left(L), or go straight (S), consider observing the direction for each of three successive vehicles.

Solution

3 options are there turn right , turn left, go straight

we have 3 cars mark then 1,2,3

event A= [1,2,3 turn right , 1,2,3 turn left , 1,2,3 go straight]

event B= [1,2 turn right ; 1,3 turn right; 3,2 turn right; 1,2 turn left; 1,3 turn left; 3,2 turn left ;1,2 go straight ; 3,1 go staright , 3,2 go straight ]

A INTERSECTION B = [ NO POINTS AS ONE DEAL WITH 3 CARS AND ONE 2 CARS ]

A UNION B = [ 1,2,3 turn right ; 1,2,3 turn left ; 1,2,3 go straight ; 1,2 turn right ; 1,3 turn right; 3,2 turn right; 1,2 turn left; 1,3 turn left; 3,2 turn left ;1,2 go straight ; 3,1 go staright , 3,2 go straight ]