Which number should replace the question mark?[img]2011q4/ct_eyyjsaz2008_eyyjsa

游客2024-08-08 39

问题 Which number should replace the question mark?

选项

答案 15

解析 In each line, add the two figures at the sides and divide by two to get the central figure.Therefore (17+13)÷2=15．

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Whichnumbershouldreplacethequestionmark?[img]2011q4/ct_eyyjsaz2008_eyyjsa