36.

P
Q
R
S

```Answer

Answer: Option  D Explanation:Starting with the G, move clockwise around the circle, in steps of 3 letters, then 4, 5, 6 and 7. ```

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37.

E
F
G
H

```Answer

Answer: Option  B Explanation:Starting with the top segment of the top left square and moving clockwise around the other 3 squares,
letters move through the alphabet in steps of 2, with the positions moving one place clockwise each time.
Letters in the next segment of the top left square follow the same pattern, in steps of 3 letters etc. ```

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38.

P
Q
R
S

```Answer

Answer: Option  D Explanation:Taking pairs of letters in the inner and outer segments of each eighth of the diagram,
the numerical values always add up to 20. ```

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39.

P
Q
R
S

```Answer

Answer: Option  D Explanation:Taking the numerical value of each letter, they follow the sequence of Prime Numbers. ```

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40.

N
S
O
F

```Answer

Answer: Option  A Explanation:The alphabetical value of the letters in the left hand column follows through the sequence of Prime Numbers,
with the letters in the right hand column representing the corresponding reverse alphabetical values. ```

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