A university students' ID consists of 7 digits, each from 0, 1, 2,... 8, or 9, in succession. a) How many different poss

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A University Students Id Consists Of 7 Digits Each From 0 1 2 8 Or 9 In Succession A How Many Different Poss 1 (51.73 KiB) Viewed 18 times

A university students' ID consists of 7 digits, each from 0, 1, 2,... 8, or 9, in succession. a) How many different possible IDs are there if there are no restrictions on the choice of digits [order is important and repetition is allowed (with replacement) ]? (5 Points) b) How many different possible IDs are there if there are no restrictions on the choice of digits [order is important and repetition is not allowed (without replacement) ]? (5 Points) c) How many different possible IDs are there if the first digit can not be zero [order is important and repetition is allowed(with replacement) ]? (5 Points) d) How many different possible IDs are there if order is not important and repetition is not allowed (without replacement)? (5 Points)