7 is overdue. 

6, 2, and 0 are due.

Low Pairs: (30 days) 

• 13
• 17
• 23
• 24
• 38
• 39
• 56
• 69

The pair 56 hasn't been drawn in the last 30 days.  It has only been drawn twice in 60.  The average should be 6 in 60 days and 3 in 30 days. 

The double 11 hasn't been drawn in three months.  So, the double 11 is overdue. 

The double 00 hasn't been drawn in two months.  So, the double 00 is overdue. 

Since the 0 is due - the double 00 might be a good choice.