Solve Number Puzzle : 3, 5, 1, 7, 9, 5, 13, 15, ?
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number series solver
brain teasers with answers
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Solve this number puzzle.
Which number replaces the question mark?
Solve this math problem to see answer.
Correct Answer : 11
Here, working through the diagram in columns, add 4 to the top number to give the middle one, and add 6 to this number to give the lowest one.