IOQM · Mathematics · Basic Preliminaries

Greatest Integer Function

Floor and fractional-part identities, classic [.]-based olympiad problems.

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About this topic in IOQM

  • Previous papers: 10 official question papers from HBCSE-TIFR (Mathematical Olympiad Cell) — 2025, 2024, 2022-23, 2021-22 and 1 earlier year.
  • Practice: 3 answer-checked practice questions on Greatest Integer Function for IOQM — practise them.

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  • Q1 · Greatest Integer Function · EASY

    What is the value of ⌊4.7⌋ + ⌊−2.3⌋, where ⌊·⌋ denotes the greatest integer function?

  • Q2 · Greatest Integer Function · MEDIUM

    How many integers x satisfy the equation ⌊x/3⌋ = 5?

  • Q3 · Greatest Integer Function · HARD

    Find the sum ⌊√1⌋ + ⌊√2⌋ + ⌊√3⌋ + ... + ⌊√100⌋.

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