Puzzles - Missing letters puzzles

Exercise : Missing letters puzzles
220.
Answer
:
C
Explanation
:
The sum of the numerical values of the letters in each column of the diagram equals 29.

221.
Answer
:
U
Explanation
:
The sum of the numerical values of the letters in opposite segments of the circle equals 26.

222.
Answer
:
J
Explanation
:
Start with the letter J in the top left square, and move clockwise around the other squares. Letters follow the alphabetic sequence, skipping 4 letters at a time. Start with the X in the inner square in the top left, and move clockwise. These inner letters also follow the alphabetic sequence, skipping 5 letters at a time.