Answer
Geometric sequence with common ratio $10^d$
Work Step by Step
We are given the arithmetic sequence:
$$a_1,a_2,a_3,\dots$$
where $a_{k+1}-a_k=d$.
Consider the sequence:
$$10^{a_1},10^{a_2},10^{a_3}\dots$$
We calculate the ratio of two consecutive terms:
$$\dfrac{10^{a_{k+1}}}{10^{a_k}}=10^{a_{k+1}-a_k}=10^d.$$
So the second sequence is geometric, its common ratio being $10^d$.
