Question detail
reasoning check: find the nth term of the arithmetic sequence 5, 10, 15, 20.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Sequences
Question
- A. 5n + 0
- B. 9
- C. 1
- D. 10
Answer
The correct answer is 5n + 0.
Explanation
Trace the calculation before choosing. The verified method for Nth term gives 5n + 0; no later explanation is allowed to change that value.
Common mistake
Nth term common mistake 1
Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Deduce expressions to calculate the nth term of linear sequences..
Show the method first, then give the final answer in the required form. Apply this directly to Nth term.
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