46.  


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Answer

 Option

Start with the top left hand box, and move around the others in a clockwise spiral towards the centre. Read each box as a pair of 2 digit numbers, one above the other. The sum of the 2 digit numbers in each box follows the sequence 55, 60, 65, 70 and 75.

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47.  


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Answer

 Option

Reading each column as a 3 digit number, moving from left to right, the columns follow the sequence of cube numbers of 5, 6 and 7.

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48.  


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Answer

 Option

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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49.  


0.
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5


Answer

 Option

In each group of 3 numbers, the lower number equals the average of the top two numbers.

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50.  


0.
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3


Answer

 Option

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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