I need help on this problem

Ineed to know the rule for the sequence. plz !

Jack is considering a list of features and fees for denver bank. jack plans on using network atms about 4 times per month. what would be jack’s total estimated annual fees for a checking account with direct paycheck deposit, one overdraft per year, and no 2nd copies of statements?

Is it true that product of 3 consecutive natural numbers is always divisible by 6? justifyyour answer