Question: 1 a) Using the digits 0, 2, 3, 7, 8, 9, how many 4-digit numbers can be formed when repetition is not allowed (digits cannot

1 a) Using the digits 0, 2, 3, 7, 8, 9, how many 4-digit numbers can be formed when repetition is not allowed (digits cannot be repeated)?

1. b) Using the digits 1, 2, 3, 7, 8, 9, how many 4-digit numbers can be formed when repetition is not allowed (digits cannot be repeated) and the number must be odd?

1 c) How many different ways can you arrange the letters in the word OGOPOGO?

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