What number can replace the question mark12 6 5 73 17 2 3 30 23 4 7

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What number can replace the question mark12 6 5 73 17 2 3 30 23 4 7
What number can replace the question mark
12 6 5 73 17 2 3 30 23 4 7

What number can replace the question mark12 6 5 73 17 2 3 30 23 4 7
规律:12+6*6+5*5=73;17+2*2+3*3=30
所以23+4*4+7*7=88