Question: 7. How many 4 digit numbers can be formed using only the numbers 3 2 7 6 0 4 9 if: a) there are no

7. How many 4 digit numbers can be formed using only the numbers 3 2 7 6 0 4 9 if:

a) there are no repeats allowed?

b) the number is odd and no repeats allowed?

c) the number is greater than 4000 and no repeats are allowed?

d) the number is greater than 4000 and repeats are allowed?

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