If the nth term of a sequence is an expressionof first degree in n, show that it is an A.P.

(i) The nth term of a progression is 2n+1. Prove that it is an A. P. Also find its 5th term. (ii) The nth term of a progression is linear expansion in 'n' . Show that it is an A.P. (iii) The nth term of a progression is (n^(2)+1) . Show that it is not an A.P.

The nth term of a sequence is given by a_(n)=2n^(2)+n+1. Show that it is not an A.P.

T_n=4n-10 is the nth term of a sequence. Find whether it is an A.P. or not. If it is an A.P. Find it's first term and C.D.

The nth term of a sequence is given by a_n=2n^2+n+1. Show that it is not an A.P.

The nth term of a sequence is given by a_n=2n+7. Show that it is an A.P. Also, find its 7th term.

The nth term of a sequence is given by a_n=2n+7. Show that it is an A.P. Also, find its 7th term.

If nth term of a sequences is 2n+b, wherea,b are constants,is the this sequence an A.P.?

The rth terms of an A.P is n and it's nth term is r, show that its mth term is r+n - m.

The nth term of a sequence is 8 -5n. Show that the sequence is an A.P.

The nth term of a sequence is 3n-2 is the sequence an A.P.? If so, find its 10th term.