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A seven digit number of the form a1a2a3...

A seven digit number of the form `a_1a_2a_3a_4a_5a_6a_7` (ali digits are different) is randomly formed. If N denotes the number of numbers of the form `a_1 > a_2a> a_3 > a_4 < a_5 < a_6 < a_7,` then `N/100` is equal to

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