36.

19
21
23
25

```Answer

Answer: Option  C Explanation:Looking at the diagram as two columns, numbers in the left hand column increase by 5, 6, 7 etc,
and numbers in the right hand column increase by 6, 7, 8 etc. ```

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37.

18
20
22
24

```Answer

Answer: Option  C Explanation:Add together values in corresponding positions of the top two crosses, and put the results in
the lower left cross. Calculate the difference between values in corresponding positions of
the top two crosses, and put the results in the lower right cross. Finally, add together the
values in corresponding positions of the lower two crosses to give the values in the central cross. ```

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38.

17
19
21
23

```Answer

Answer: Option  B Explanation:As you move diagonally down, numbers follow the sequence of Prime Numbers. ```

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39.

14
16
17
19

```Answer

Answer: Option  B Explanation:Moving clockwise, around alternate segments in the chain, one sequence decreases by 1, 2, 3 and
4 each time, while the other increases by 2, 3, 4 and 5. ```

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40.

12
16
20
24

```Answer

Answer: Option  B Explanation:Starting bottom left and moving clockwise around the triangle, numbers follow the sequence Numbers. ```

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