Crossword Puzzles Questions

3. Which number is missing from this column of boxes?
Starting at the top left, and moving alternately right and left as you go down, add 2 to get the next value, then 3, then 4, etc. Follow the same pattern with the top right number but add 1, then 2, then 3, etc.
4. Which number replaces the blanks?
3 and 3
The values of the segments in the top circle equal the sum of the corresponding opposite segments in the left hand circle. The values in the bottom circle equal the difference between corresponding opposite segments of the left hand circle.

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