Question: 4)How many 7-digit numbers less than 6000000 can be formed using the digits {2,3,5,6,7,8,9}. Repetition now allowed 3) A family of six line up for

4)How many 7-digit numbers less than 6000000 can be formed using the digits {2,3,5,6,7,8,9}. Repetition now allowed

3) A family of six line up for a photo. How many ways can this be done if the father is on the far left, the mother is on the far right and the twins (Jack and Alex) are side by side?

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