Insert the missing number: 1 3 2 ____ 3 7

Insert the missing number: 1 3 2 ____ 3 7

Explanation

 Looking at the alternating pattern:

  • First sequence: 1, 2, 3 (Increasing)

  • Second sequence: 3, ?, 7

Checking possible middle value:

  • The pattern could follow a doubling sequence: 3 times 2 = 6