2(x+y)=24(x=rows and y=col)
x+y=12
now x could 1,2,3,4,5,6,7,8,9,10,11 and y could be 11,10,9,8,7,6,5,4,3,2,1 respectively
Answer:
Total number of cards which have to arrange in even rows and Columns=24
So, Even arrays are
=6 rows and 4 columns
=4 rows and 6 columns
=12 rows and 2 columns
=2 rows and 12 columns
