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Number Grid Coursework. For this coursework I shall investigate and explain thoroughly the patterns, rules and formulae found in a number grid when placing a square at any point in the grid, multiplying the top left and bottom right corners and the top right and bottom left corners and finding the difference. In the beginning of my investigation I'd like to write the main purpose of it. I want to find one common formula that would help me to find difference on any x by x square on 10 by 10 number grid. Let's start the investigation! I have a 2 by 2 square in a 10 by 10 number grid. I am going to investigate it and find the difference. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 First I shall find the product of the top left number and the bottom right number in the square. I shall find the product of the top right and bottom left numbers. Now...

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