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5 n+2 −6 xx 5 n+113 xx 5 n − 2 5 n+1 ...

`5 n+2 −6 xx 5 n+113 xx 5 n − 2 5 n+1` is equal to (a) `5 3` (b) `− 5 3` (c) `3 5` (d) `− 3 5`

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