Question 765347
This is an arithmetic progression with first term as 6, and difference as -5.
(i.e. each term is the previous term -5)

In any arithmetic progression, if 'a' is the first term, and the difference is d,

Second term = a + d
3rd term = a + d + d = a + 2d
4th term = a + 3d
In general, nth term = a + (n-1)*d

So in the above series, nth term will be {{{6 - 5*(n - 1) = 11 - 5*n}}}

Hope you got it :)