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Part 1 Here we have a grid with nine numbers in a row starting from 1 and ending with 81. There you can see the shape, which is marked in red colour. This shape is called a T-Shape. The T-Shape is always a shape of five numbers. 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 The number at the bottom is 20. This number is called the T-Number. The sum of all the five numbers is called the T-Total. In this case the T-Number would be: 1 + 2 + 3 + 11 + 20 = 37 To find out a relationship between the T-Number and the T-Total we need more results in the same grid. 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 In this grid we have six more T-Shapes. Now we need to find out their T-Totals. 1 + 2 + 3 + 11 + 20 = 37 2 + 3 + 4 + 12 + 21 = 42 3 + 4 + 5 + 13 + 22 = 47 4 + 5 +...

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