What is the missing number?
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What is the missing number?
试题答案
答案:7
解析:17+19=36, square root=6; 45+36=81, square root=9; 31+18=49, square root=7 |

What is the missing number?
答案:7
解析:17+19=36, square root=6; 45+36=81, square root=9; 31+18=49, square root=7 |