A university students' ID consists of 7 digits, each from 0, 1, 2,... 8, or 9, in succession. a) How many different poss
Posted: Wed Jul 06, 2022 12:24 pm
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)