Decide whether these sequences are arithmetic:

MATHEMATICS · Multi-part · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

Decide whether these sequences are arithmetic: (1) (a)

7,15,23,31,39,\ldots

(2) (b)

10,14,18,20,24,\ldots

(3) (c)

41,35,29,23,17,\ldots

(4) (d)

6,1,-6,-11,-16,\ldots