Chapter 12 - Section 12.2 - Arithmetic Sequences - 12.2 Exercises - Page 856: 4

If we know the first and second terms of an arithmetic sequence, then we can find any other term: true.

When one knows the first two terms of an arithmetic sequence one can find the difference between the two terms. One can then plug in the difference (and the first term) into the formula : $a_{n}$ = a + d(n-1) to calculate any term.