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# The numbers $a_n=6^n-5n$ for $n=1,2,3,.....$ when divided by 25 leave the remainder:

$\begin {array} {1 1} (1)\;9 & \quad (2)\;7 \\ (3)\;3 & \quad (4)\;1 \end {array}$
Can you answer this question?

(4) 1
answered Nov 7, 2013 by