What is a Sequence?
A sequence is an ordered list of numbers, objects, or quantities written according to a rule or pattern.
Practice This ConceptMain explanation
Teacher explanation
In a sequence, the position of a term matters. The first term, second term, third term, and so on are not just values; they are values attached to places. For example, 3, 6, 9, 12 is different from 12, 9, 6, 3 because the order has changed.
Example
In 4, 7, 10, 13, the first term is 4, the second term is 7, and each next term increases by 3.
Simple analogy
Sequence means order first, pattern next.
Common confusion
Students often look only at the numbers and ignore their positions, so they may reverse the sequence or choose a term without checking its place.
Exam tip
Always write the term position along with the term value when solving missing-term or nth-term questions.
Answer writing and exam use
1-mark use
Write the exact meaning of what is a sequence? in one clean line.
2-mark use
Define what is a sequence? and add one example or condition.
3-mark use
Explain what is a sequence?, show the method or example, and mention the common mistake.
Practice this concept with focused MCQs
Open the concept quiz intro first, review the test details, and then start a focused MCQ set from this concept only. Instant score and answer review are live now.
Help improve this page
Found something confusing, incorrect, or missing?