What is the missing number here : 2, 4, ___, 8, 6, What is the missing number here : ___, 3, 5, 7, 1, What is the missing number here : 10, 20, 30, ____, 40, What is the missing number here : 5, 10,___, 20, 15, What is the missing number here : 1, 4, 7, ___, 10, What is the missing number here : 3, 6, ___, 12, 9, What is the missing number here : 6, 12, ___, 24, 18, What is the missing number here : 8, 16, ___, 32, 24, What is the missing number here : 15, 30, ___, 60, 45, What is the missing number here : 9, 18, ___, 36, 27, What is the missing number here : 4, 8, ___, 16, 12, What is the missing number here : 7, 14, ___, 28, 21, What is the missing number here : 11, 22, ___, 44, 33, What is the missing number here : 12, 24, ___, 48, 36, What is the missing number here : 13, 26, ___, 52, 39

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