Question

Classify each of the following as either a legal or illegal Python identifier: a) fred b) if c) 3Name d) -5 e) sum_total f) sumTotal g) sum-total h) Sum of n i) Tax*Sale j) Sum$A k) 123 l) x123

Answer 1

Answer:

An arithmetic sequence can be defined by an explicit formula in which an = d (n - 1) + c, where d is the common difference between consecutive terms, and c = a1.