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Let a, b, c be such that b(a""+""c)!=0...

Let a, b, c be such that `b(a""+""c)!=0` . If `|a a+1 a-1; -b b+1 b-1; c c-1 c+1|+|a+1 b+1 c-1 ; a-1 b-1 c+1 ;(-1)^(n+2)a (-1)^(n+1)b (-1)^n c|=0` then the value of n is (1) zero (2) any even integer (3) any odd integer (4) any integer

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