If X={x : x =4(n-1),n belongs to N} and Y={y : y =3^n-2n-1,n belongs to N},then XUY is (a) W(b) X(c) Y(d) N(mainly with reason, please!)
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your option are inappropriate
KhushiMidha:
kyuu
mera dil krda mai gall krda raha thuade nll
hd aa chl dvai ta kha la
tabiat khrab krn da zyda shonk aa?
koi na kha lu
okhh
tuc ju ho thik krn nu
acha mai kive kru
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dsda
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