The positive odd numbers 1,3,5,7 Arrange in five columns according to the format shown in the figure. What is the row and column of 2007? One column, two columns, three columns, four columns and five columns One line 1 3 5 7 Second line 15 13 11 9 Sanxing 17 19 21 23 Four lines 31 29 27 25 Five elements 33 35 37 39 … In which row and which column is 2009

Arithmetic formula
1+2（n-1)=2009
N = 1005, so 2009 is the 1005th number
1005÷4=251…… one
On line 252
Even rows are arranged in reverse order
It's 252, column 4

RELATED INFORMATIONS

1. The matrix of Figure 1 is composed of odd numbers Figure 1 1 3 5 7 9 11 13 15 17 19 ………………………… 91 93 95 97 99 5. 7, 13, 15 are framed together (1) Look at the relationship between the four numbers in the box in Figure 1. Please use letters to indicate the relationship between the four numbers in such a box (2) If the sum of the four numbers framed in this way is 200, calculate the four numbers (3) Is there such four numbers whose sum is 400? Why?
2. The positive odd numbers 1,3,5,7 Arrange in five columns according to the format shown in the figure. What is the row and column of 2005? The positive odd numbers 1,3,5,7 Arrange in five columns according to the format shown in the figure. What is the row and column of 2007? The positive odd numbers are arranged in 5 columns as follows: First column second column third column fourth column fifth column First line 1 3 5 7 The second line 15 13 11 9 The third line 17 19 21 23 The fourth line 31 29 27 25
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