Puzzles - Missing letters puzzles

Answer

:

P

Explanation

:

In each diagram, starting on the top left and moving clockwise in a spiral towards the centre, letters increase in value by 3 for the left hand diagram, 4 for the middle, and 5 for the right hand diagram.

Answer

:

V

Explanation

:

Starting with the B in the top left, and moving left to right across the diagram in horizontal lines, letters advance through the alphabet in steps of 6 letters at a time.

Answer

:

1

Explanation

:

Start at the top left and move down, then along one space to the right and up the next column, in a snakes and ladders pattern. Letters are written in alternate squares, in steps of 2 letters at a time.