Question

Identify the correct sequence represents a infinite arithmetic sequence.

• A. $1+4+7+\mathrm{10.....}$
• B. $4,20,100,14$
• C. $2,5,8,11$
• D. $11,1,-9,-19,-29$

Answer 1

The correct option is A $1+4+7+\mathrm{10.....}$

Infinite arithmetic progression is $1+4+7+\mathrm{10.....}$
A sequence of the type $a,a+d,a+2d,a+3d......$ is said to form an infinite A.P.
Where $a=$ first number

In arithmetic sequence, the difference should be the same.

Here the common difference is $3$.
$d=$ common difference