1.  


4
5
6
7


Answer

 Option

Working in columns, the sum of the numbers in each column is always 14.

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2.  


37
38
39
40


Answer

 Option

Working from top to bottom, double each number and subtract 1, 2, then 3 etc.

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3.  


4
5
6
7


Answer

 Option

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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4.  


4
5
6
7


Answer

 Option

The numbers in each row and column add up to 15.

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5.  


9
12
6
8


Answer

 Option

The number at the centre of each triangle equals the sum of the lower two numbers minus the top number.

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