What is the missing number in this series?
73, 12, 6, 3, 5, , 4, 4
(1) 10 (2) 55 (3) 6 (4) 20 (5) 4
What is the missing number in this series?
73, 12, 6, 3, 5, , 4, 4
(1) 10 (2) 55 (3) 6 (4) 20 (5) 4
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