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第一轮6.1.试在4×4方格表的每一个方格中填入一个正整数,使得各行数的乘积的和能被5整除,而各列数的乘积的和不能被5整除.(先将每一行中的4个数相乘,再把4个乘积相加;对列作同样处理.)6.2.在树林里生长着橡树和枞树.主人砍去了橡树的三分之一和枞树的六分之一.生态组织“绿色
In the first round, 6.1. Place a positive integer in each square of the 4×4 grid table so that the sum of the products of each row can be divisible by 5, and the sum of the products of the columns cannot be divisible by 5. (First multiply the 4 numbers in each row and add 4 products; treat the columns the same way.) 6.2. Oaks and banyan trees grow in the wood. The owner cuts down one third of the oak. And one-sixth of eucalyptus. Ecological "Green