There are 12 levels in liangs new video game. if he plays the same number of levels each day, what are all the possibilities for the number of days he could spend playing the game without repeating a level?

The anwser cause i do not understand just plez

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score

Julie was able to walk 16 km through the zoo in 6 hours. how long will it take her to walk 24 km through the zoo?