Question

22,15,8,1,,,AP-321 yes or no

Answer 1

yes it is in AP as it has common difference of -7 and -321 as its 50th term

Answer 2

Yes it is an A.P(Arithmetic Progression)

Step-by-step explanation:

According to question

$a_1=22$

$a_2=15$

$a_3=8$

$a_4=1$

$d=a_2-a_1=15-22=-7$

$d=a_3-a_2=8-15=-7$

$d=a_4-a_3=1-8=-7$

The Common difference of consecutive terms is constant so it is an A.P.

In a mathematics arithmetic progression/series is one branch of algebra, the consecutive term is the same which is called common difference d for all term so it is called an A.P.