Mathematics - Sequences and Series
Practise 6 IAT (IISER) previous year questions on Sequences and Series, compiled from papers spanning 2018 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty IAT (IISER) tests.
Sequences and Series has been asked in 5 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 6 questions in all. 0% of them were easy, 100% moderate and 0% tough. Most of its questions came from 2026, with 1 question that year. In the last three years (2023–2026) it had 2 questions across 3 papers, about 0.7 per paper.
The chapter's 3 topics are not weighted equally: Arithmetic Progression (3 questions, 50%), Geometric Progression (2 questions, 33%), and Means (1 question, 17%) have been asked the most. Arithmetic Progression has also led over the last five years, with 2 questions.
- 1Let be a geometric progression of positive integers such that and for all positive integers . What is the value of ?2026Geometric Progression
- 2Let denote the sum of the first terms of a sequence If for all , what is the value of ?2025Arithmetic Progression
- 3Let be a sequence of real numbers. Let . If for some real number and for all , then which one of the following statements is Correct?2024Arithmetic Progression
- 4A lab reports that the global average temperature in the year 2020 was and predicts that the global average temperature will increase at the2022Geometric Progression
- 5The sum of consecutive terms of an arithmetic progression consisting of integers is 161 . Then, a possible value of is2019Arithmetic Progression
- 6Let \(a, b\) be distinct positive real numbers, whose geometric mean equals \( {a^{t-99}+b^{t-99}}{a^{t-100}+b^{t-100}}\). Then \(t\) must e2018Means
Frequently Asked Questions
1.How many questions are available for Sequences and Series?
This chapter includes 6 questions compiled from IAT (IISER) papers spanning 2018 to 2026.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Sequences and Series chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Sequences and Series an important chapter for IAT (IISER) Mathematics?
Sequences and Series has appeared in 6 of the 10 years of IAT (IISER) papers covered here, with 6 questions across 6 papers - about one per paper it appears in.
4.What is the difficulty level of Sequences and Series questions in IAT (IISER)?
Of the 6 questions analysed for this chapter, 0% are easy, 100% moderate and 0% tough. 2026 had the most, with 1 question.
5.Which topics in Sequences and Series should I focus on?
These topics have carried the most weightage in Sequences and Series:
- Arithmetic Progression - 3 questions (50%)
- Geometric Progression - 2 questions (33%)
- Means - 1 question (17%)
6.Is Sequences and Series's weightage in IAT (IISER) going up or down?
Across all 6 papers analysed, Sequences and Series has averaged about 1.0 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.