## Arithmetic Sequences

Summary
The essence of arithmetic sequences is explored, highlighting their definition, the formula for finding any term in the sequence, and practical applications in solving GRE problems.
• An arithmetic sequence is defined by adding a constant value, known as the common difference, to each term to get the next term.
• The formula for finding the nth term of an arithmetic sequence is a_n = a1 + (n-1) * d, where a1 is the first term and d is the common difference.
• This formula is crucial for solving GRE problems that ask for specific terms in a sequence or for sequences that represent sets of numbers with specific properties.
• Understanding the derivation of the formula is emphasized over mere memorization to deepen comprehension and application skills.
• Examples and practice problems demonstrate how to apply the formula to find specific terms in a sequence and to solve problems involving sequences that fit certain criteria.
Chapters
00:04
Understanding Arithmetic Sequences
00:59
The Formula for Arithmetic Sequences
04:27
Applying the Formula: Practice Problems