I run a book club with $n$ people, not including myself. Every day, for $365$ days, i invite three members in the club to review a book. What is the smallest positive integer $n$ so that i can avoid ever having the exact same group of three members over all $365$ days?

When amy exercises in her fitness center for 1 hr she burns a total of 475 calories.if she burns 9 calories a minute jogging on the treadmill and then burns 6.5 calories a minute pedaling on the stationary bicycle how many minutes of the hour does she spend exercising on the bicycle?