• if it is not a multiple of 4, then it is between 60 and 69
• if it is a multiple of 3 it is between 50 and 59
• if it is not a multiple of 6 it is between 70 and 79.

76 fits the criteria:

>It is a multiple of 4, so it isn't 60-69

>It isn't a multiple of 3, so it isn't 50-59

>It isn't a multiple of of 6, so it is 70-79