Question: How many different two-digit numbers can you form using the digits 4, 2, 7, 1, 6, 8, and 9 without repetition? For example, 77

How many different two-digit numbers can you form using the digits 4, 2, 7, 1, 6, 8, and 9 without repetition? For example, 77 is not allowed The number of different two-digit numbers is [6

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