Q. The number of 4-digit integers in the closed interval $[2022, 4482]$ formed by using the digits $0, 2, 3, 4, 6, 7$ is ___

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Answer: 569

Solution:

Q. The number of 4-digit integers in the closed interval [2022,4482] formed by using the digits 0,2,3,4,6,7 is ___