Puzzles - Missing letters puzzles

Answer

:

J

Explanation

:

In each circle, the reverse alphabetical value of the lower letter equals the sum of the alphabetical values of the top 2 letters.

Answer

:

B

Explanation

:

Start at the top left and move down the left hand column, then move one place to the right and up the next column etc. in a snakes and ladders pattern. Letters are written in alternate spaces, in steps of 7 letters at a time.

Answer

:

R

Explanation

:

The sum of the numerical values of letters in opposite segments of the circle is always 22.