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A polygon has 54 diagonals. Then the number of its sides is :
\[\begin {array} {1 1} (1)\;7 & \quad (2)\;9 \\ (3)\;10 & \quad (4)\;12 \end {array}\]
jeemain
eamcet
math
2010
q6
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Sep 26, 2013
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meena.p
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Nov 7, 2013
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