Sequences (arithmetic sequences) — KCSE Mathematics
KCSE Mathematics · 115 practice questions · 4 syllabus objectives
What You'll Learn
Key learning outcomes for this topic, aligned to the KNEC KCSE syllabus.
Identify an arithmetic sequence; find the first term and common difference from a sequence or given terms
Apply the formula for the nth term of an AP: Tₙ = a + (n–1)d, and find the sum using Sₙ = n/2(2a + (n–1)d)
Solve problems involving arithmetic progressions in real-life contexts (savings, salary increments, stacking)
Sequences (arithmetic sequences)
Sample Questions
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A certain savings plan starts with an initial deposit of KES 500 and increases by KES 100 each month. Identify the amount saved in the 6th month. (2 marks)
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Calculate the sum of the first 15 terms of an arithmetic series where the first term is 2 and the common difference is 4. (4 marks)
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Explain how to find the 10th term of an arithmetic sequence where the first term is 5 and the common difference is 3. (3 marks)
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Why Practise Sequences (arithmetic sequences)?
KNEC Aligned
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