Answer Answer: Option C Explanation:In each group of 3 numbers, the lower number equals the average of the top two numbers.
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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.
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.
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.
Answer Answer: Option B Explanation: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.