Using the digits 2 through 10 find the number of different 4 digit numbers such that a Digits can be used more than once b

Question

Using the digits 2 through 10 find the number of different 4 digit numbers such that a Digits can be used more than once b Digits cannot be repeated but can come in any order ways ways c Digits cannot be repeated and must be written in increasing order d Which of the above counting questions is a combination and which is a permutation Explain why this makes sense Note You will not receive credit until your instructor reviews your answer ways

Kunduz · Accepted Answer

Click to see the answer