Question

A sequence starts with the terms 1 and 10.

Find the next two terms if it is arithmetic: 1, 10, ___, ___.
Find the next two terms if it is geometric: 1, 10, ___, ___.
Find two possible next terms if it is neither arithmetic nor geometric: 1, 10, ___, ___.

Answer 1

1, 11 ,21 ,31

1, ,12 ,22 ,32

1, ,13 ,23 ,33

Explanation: i just took the test and got it right