contestada

The east west streets are numbered starting with 1st and the north south street area lettered starting with
a. how many paths are there from 1st and a to 7th and f (assuming no back tracking)

Respuesta :

7*6=42
if  a=1  then  f=6 , so there are 6 paths from a to f  on the north to south street
there are 7  paths from 1  to 7 on the east west street

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