Hello i need urgently help:

how can i build a Matrix in Excel combining 250 items (ex. airports) with
250 items (ex. airports)?

i schould create a row with the 62500 possible combinations... there must be
a formula to make this autmatically.

ex. ZHR JFK ATL ....
ZHR
JFK
ATL
.....
And then I should get a list in one row :


ZHR-JFK
ZHR-ATL
......
JFL-ZHR
JFK-ATL
.....
ATL-ZHR
ATL-JFK

thank you very much for your help.

regards

Mischa