Question

show that progression 11,5,-1,-7,-13,.......is an A.P. write down its (i) first term (ii) common difference (iii) 10th term​

Answer 1

This is your answer.....

Answer 2

Answer:

11,5,-1,-7,-13,......

First term=a=11.

Common difference=d=a2-a1=5-11=-6.

a10=?.

an=a+(n-1)d.

a10=11+(10-1)(-6).

=11+(9)(-6).

=11-54.

=-43.

I think this is your answer.