Puzzles - Missing letters puzzles

Answer

:

F

Explanation

:

Start with the A in the top left hand segment, and move in straight vertical lines, from top to bottom, left to right. Letters follow the alphabetic sequence, skipping 1 letter, then 2, then 3 etc.

Answer

:

E

Explanation

:

Start at the top left, and move around the diagram in a Z shape. The numerical value of the letters increases alternately by 6, then 3.

Answer

:

E

Explanation

:

Convert each letter to its numerical value, and split the diagram into rows, reading each row as a 2 or 3 digit value. The value represented by the middle line of the diagram equals the sum of the upper value and lower value.