Answer:
1,4 and 5
Step-by-step explanation:
Solutions
x+ 3 <= 10
Subtract 3 from each side:
x <= 7
any of the 34 cars can finish first
any of the remaining 33 cars can finish second
any of the remaining 32 cars can finish third
Thus, the top 3 finishes can be done in (34)(33)(32) = 35904 ways