An arithmetic Sequence is a number sequence which has a constant difference between terms. Considering this definition which of the following is an arithmetic sequence?
I. e^2, f^2, g^2, h^2, i^2
II. e-6, f-3, g-5, h-3, i-3
III. 2e, 2f, 2g, 2h,2i Choose the correct answer:
A) II and III
B) III only
C) I and III
D) I and II
E) II only
lets look at the three choices...   I. e^2, f^2, g^2, h^2, i^2   since the difference is not constant, it is not an arithmetic sequence...   II. e-6, f-3, g-5, h-3, i-3   since the difference is not constant, it is not an arithmetic sequence   III. 2e, 2f, 2g, 2h,2i   since the difference is constant it is an arithmetic sequence...   The answer III only)
<result>B</result>
An arithmetic Sequence is a number sequence which has a constant difference between terms. Considering this definition which of the following is an arithmetic sequence?
I. e^2, f^2, g^2, h^2, i^2
II. e-6, f-3, g-5, h-3, i-3
III. 2e, 2f, 2g, 2h,2i