Puzzles - Missing letters puzzles

Exercise : Missing letters puzzles
109.
Answer
:
N
Explanation
:
Moving from left to right, top to bottom letters follow alphabetical order, skipping any letters written with curved lines.

110.
Answer
:
S
Explanation
:
Working from top to bottom, the numerical values of the letters follow the sequence of Prime Numbers, adding 1, then 2, then 3 etc.

111.
Answer
:
L
Explanation
:
Start at the top of the diagram and work in rows, from left to right, top to bottom. Letters move through the alphabet in steps of 4, 5, 6, 7, 8, 9 and 10, before repeating this sequence.