Offline paper
Mathematics · 2013
JEE Main 2013 · 2013-04-07 Offline · Q12
Let T_n be the number of all possible triangles formed by joining vertices of an n -sided regular polygon. If T_n +1 - T_n =10, then the value of n…
Let $\displaystyle T_n$ be the number of all possible triangles formed by joining vertices of an $\displaystyle n$-sided regular polygon. If $\displaystyle \mathrm{T}_{\mathrm{n}+1}-\mathrm{T}_{\mathrm{n}}=10$, then the value of n is :
Official answer
(3)
$\displaystyle 5$
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JEE Main 2013 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.