41. 7
9
11
15

```Answer

Answer: Option  C Explanation:Split the left and right hand circles in half, vertically. The sum of the numbers in the left hand
half of the left circle appears in the top left hand segment of the middle circle, and the
sum of the numbers in the right hand half of the left hand circle appears in the bottom left hand
segment of the middle circle. Repeat this pattern for the right hand circle. ```

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42. 5
7
9
11

```Answer

Answer: Option  B Explanation:In each diagram, the sum of the upper left and upper middle numbers is written in the centre box,
and the sum of the upper right and upper middle numbers is written in the lower central box. ```

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43. 4
5
6
7

```Answer

Answer: Option  C Explanation:The number at the centre of each segment equals the sum of the numbers on the outside of
the opposite segment. ```

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44. 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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45. 4
5
6
7

```Answer

Answer: Option  B Explanation:The numbers in the lower circles equal the numbers in corresponding segments in the upper
circles multiplied by two, then subtract 3 for the left hand circle, 4 for the middle and 5 for the
right hand circle. ```

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