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Let f ( x ) be a function such that f ( x + y ) = f ( x )  f ( y ) for all x , y   . If f

1. = 3 and   n 1 k ) k ( f = 3279, then the value of n is
2. 8
3. 9
4. 6 (4) 7

Correct answer: 6 (4) 7

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