Please give me answer in maths
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In the first row they are 23
In the second row they are 21
In the third row they are 19
common difference between two rows is 2
so last row 23-18=5
ans=5
In the second row they are 21
In the third row they are 19
common difference between two rows is 2
so last row 23-18=5
ans=5
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