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This is a 3-step stair. The total of the numbers inside the step square shape is 25+26+27+35+36+45=194. The total for this step square is 194.
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| Submitted: Tue Aug 12 2003
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David Drew MATHS COURSEWORK 91 92 93 94 95 96 97 98 99 100 81 82 83 84 85 86 87 88 89 90 71 72 73 74 75 76 77 78 79 80 61 62 63 64 65 66 67 68 69 70 51 52 53 54 55 56 57 58 59 60 41 42 43 44 45 46 47 48 49 50 31 32 33 34 35 36 37 38 39 40 21 22 23 24 25 26 27 28 29 30 11 12 13 14 15 16 17 18 19 20 1 2 3 4 5 6 7 8 9 10 This is a 3-step stair. The total of the numbers inside the step square shape is 25+26+27+35+36+45=194. The total for this step square is 194. Part 1 For other 3-step step squares investigate the relationship between the stair total and the position of the stair shape on the grid. In red is another example which there doesn't appear to be a relationship with the step-square in blue. As we look into the Step Square we say the bottom left hand corner is X and the others come after in the same formula X+2 0 X+10 X+11 X X+1 X+2 When all the numbers and X's are put together we get the following formula - 6X + 44 as there is 6 squares with X in them and we add the numbers that follow to get an otherall formula. This formula can be used to find out the total of that the Step Square using the bottom...
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