Puzzles - Logical puzzles

22.
Answer
:
F
Explanation
:
In each diagram, convert each letter to its numerical value, and read the top and bottom pairs of letters as complete 2 digit values. Multiply these values together to give the 3 digit result written in the centre spaces.

23.
Answer
:
C
Explanation
:
[NIL]

24.
Answer
:
3
Explanation
:
As you move from left to right, the spot total on each domino increases by 3 then decreases by 1 alternately.