Because it has Greece at the bottom

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242

26

8

2 new stations have been added & 11 stations were there originally

Explanation-
Let,
N = Original number of stations
X= Added stations
T = # of tickets required

T= N(N-1)
T+46 = (N+X)(N+X-1)
N^2 – N + 46 = N^2+2NX+X^2-N-X
46 = X^2+2NX-X = X(X+2N-1)

Since X and N are intergers, factor 46 to get the only two integer roots 2 and 23.
2*23=X(X+2N-1) so X = 2
and 23 =(X+2N-1)  or N = 11