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A rectangular game board is composed of identical squares arranged in a rectangular array of r rows and r+1 columns. The r rows are numbered from 1 through r, and the r+1 columns are numbered from 1 through r+1. If r>10, which of the following represents the number of squares on the board that are neither in the 4th row nor in the 7th column?
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· 相关考点
6.1.2 双集合交并补集关系考察角度四：双集合容斥原理应用题（求补集）
以上解析由 考满分老师提供。
