Find the common difference: 1, 201,401,601, ...

200

Step-by-step explanation:

The common difference is 200.

1 + 200 = 201;

201 + 200 = 402;

and so on.

The explicit formula for the nth term of this arithmetic sequence is

a (n) = 1 + 200 (n - 1)

Answer: the common difference is 200

Step-by-step explanation: there is 200 between every number and 201-1 is 200.