7
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Can you guess the pattern? Fill in the blank for the last triangle4 triangles, each with a number at each corner and a number in the center. First triangle: {2,2,5,8}, where 8 is in the center. The other triangles: {7,5,2,9}, {3,2,1,1}, {3,7,4,?}

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14
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I think the answer is 5, because 3*4-7=5

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