// a >= b && a >= c // Analysis if(Math.abs(b==0) && Math.abs(c==0)) min = "red"; else if(Math.abs(b==0) || (Math.abs(b)>Math.abs(c) && Math.abs(c)!=0)) min = "blue"; else min = "green";The code begins by testing all of the situations where 'a' is greater than or equal to 'b'. However, that test tells us nothing of 'c's relationship to either 'a' or 'b'. Just prior to this section of code, the value of 'c' was compared to the value of 'a', so if execution reaches this point in the code, we know that 'a' is greater than or equal to both 'b' and 'c'.
Because 'a' is at least equal to both 'b' and 'c', the first conditional tests to see if both 'a' and 'b' are equal to 0. If that is the case, the min variable is set to 'a' ("red").
If that test fails, the code tests the two conditions where min should be set to 'c' (or "blue") -- when 'b' is 0, or when 'b' is greater than c and c is not 0.
If that test fails then min is set to green