Question

Can the common difference of an AP be negative ?

Answer 1

Answer:

"The common difference can be positive, negative or 'zero'. The English definition of the word 'progression' has nothing to do with the mathematical definition of arithmetic progression. Thus, a, a, a, a, a..... is a valid A.P. with c.d. 0.(It is also a geometric progression with common ratio=1."

PLEASE MARK THIS ANSWER AS BRAINLIEST ANSWER