Answer:
362880
Explanation:
= 9!
= 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1
= 362880
This works out at 3,628,800 possible routes. Trying one route every day in a five-day working week for 50 working weeks, it takes 14,515 years to try them all.
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