Answer:
[tex]^8C_3=336way[/tex]
Step-by-step explanation:
From the question we are told that
Number of runners [tex]N=8[/tex]
Distance [tex]d=400m[/tex]
Generally the top three places can be determined mathematically as
[tex]^8C_3[/tex]
[tex]^8C_3=336way[/tex]
therefore the top three can be determined in 336ways