Post on 21-Mar-2016
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E-mail adress:nikeshchandradas1987@gmail.com
3 // ..
A={a,b,c,d},B={1,2,3,4,5,6,7}
X={,,,,}Y={r,k,j,s}
6 A,B,C..X,Y,Z a,b,c,.x,y,z, { } A = {1,2,3,4,5,6,7,8,9,}A={X:X ,x