1. 0.
1
2
3

```Answer

Answer: Option  A Explanation:In each row of each grid, multiply the left and right hand numbers together to give a digit value,
and write this value in the two centre boxes. ```

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2. 1
2
5
7

```Answer

Answer: Option  A Explanation:Reading each row as a 3 digit number, the rows follows the sequence of square numbers, from 17 to 19. ```

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3. 1
3
5
7

```Answer

Answer: Option  A Explanation:Reading each pair of numbers as a 2 digit number, they follow the sequence of square numbers from 6 to 9. ```

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4. 1
2
3
4

```Answer

Answer: Option  A Explanation:In each circle, the number in the lower left segment equals the sum of the numbers in the
top two segments, and the number in the lower right circle equals the difference between the
numbers in the top two segments. ```

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5. 4
6
8
10

```Answer

Answer: Option  D Explanation:In each star diagram, the number in the centre equals the sum of the top three numbers,
subtracting the sum of the bottom two numbers. ```

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