Puzzles - Missing letters puzzles

Exercise : Missing letters puzzles
127.
Answer
:
1:Q 2:D
Explanation
:
The first oval contains letters with even numerical values, and the second oval contains letters with odd numerical values.

128.
Answer
:
B
Explanation
:
In each square, the sum of the numerical values of the top and bottom letters equals the sum of the left and right hand letters.

129.
Answer
:
F
Explanation
:
Add together the numerical values of the letters which appear in the outer segments, and put the letter with this value in the inner segment, one place clockwise.