If X = {8n – 7n – 1 | n ∈ N} and Y = {49n – 49 | n ∈ N}. Then
(a) X ⊂ Y
(b) Y ⊂ X
(c) X = Y 
(d) X ∩ Y = φ
If X = {8n – 7n – 1 | n ∈ N} and Y = {49n – 49 | n ∈ N}. Then
(a) X ⊂ Y
(b) Y ⊂ X
(c) X = Y
(d) X ∩ Y = φ
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