Suppose $t_n$ is the number of triangles formed using the vertices of a regular polygon of $n$ sides. If…

Suppose $t_n$ is the number of triangles formed using the vertices of a regular polygon of $n$ sides. If $t_{n+1}=t_n+28$, then $n=$
  1. 11
  2. 9
  3. 8
  4. 7

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (24 Apr Shift 2)

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