SOLUTION: The student council are running a guess the combo contest to win a locker full of candy. If the lock has 30 numbers on it how many four number combinations are possible if two numb
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Question 945959: The student council are running a guess the combo contest to win a locker full of candy. If the lock has 30 numbers on it how many four number combinations are possible if two numbers cannot appear consecutively? Why is it 30 then 29 three times? Answer by richard1234(7193) (Show Source):
You can put this solution on YOUR website! 30 choices for the first number
29 choices for the second number (it can equal anything except the first)
29 choices for the third number (it can equal anything except the second)
29 choices for the fourth number (it can equal anything except the third)
