Puzzles - Missing letters puzzles

Exercise : Missing letters puzzles
46.
Answer
:
G
Explanation
:
Starting with A and C, as you move clockwise, the numerical value of the next letter equals the sum of the preceding two letters.

47.
Answer
:
O
Explanation
:
As you move down, letters appear in alphabetical order, skipping those letters only written with straight lines.

48.
Answer
:
W
Explanation
:
Starting at the top left, and moving to the right, then down one row and to the left etc. in a snakes and ladders pattern, letters advance through the alphabet by 5 steps, then back 2, repeating this pattern for the rest of the diagram.