Find next terms in sequences

Quick Overview

This question evaluates pattern recognition, numerical reasoning, and sequence-inference competency across arithmetic, fractional, and recurrence-style relationships, and falls under the Statistics & Math domain relevant for data scientist roles.

Find next terms in sequences

Company: Optiver

Role: Data Scientist

Category: Statistics & Math

Difficulty: hard

Interview Round: Take-home Project

Find the rule and the next term for each sequence below. Explain your reasoning for each. 1) 12, 28, 36, 84, 88, 168, ? 2) 4/3, 1, 5, 8, 23, 47, ? 3) 3, 1, 2, 6, 12, 144, ? 4) 1/5, 2/3, 3/11, 3/6, 5/17, 4/9, ? 5) 7, 14, 24, 6, 12, 22, ? 6) 19, 18, 20, 60, 15, 14, 16, ? 7) 4, 2, 6, 6, 30, 150, ? 8) 1, 3, 7, 17, 41, 99, ?

Quick Answer: This question evaluates pattern recognition, numerical reasoning, and sequence-inference competency across arithmetic, fractional, and recurrence-style relationships, and falls under the Statistics & Math domain relevant for data scientist roles.

|Home/Statistics & Math/Optiver
Optiver logo
Optiver
Sep 6, 2025, 12:00 AM
hardData ScientistTake-home ProjectStatistics & Math
29
0

Pattern Recognition: Find the Rule and Next Term

You are given 8 number sequences. For each sequence:

  • Identify a clear rule that generates the terms shown.
  • Compute the next term.
  • Briefly explain your reasoning.
  1. 12, 28, 36, 84, 88, 168, ?
  2. 4/3, 1, 5, 8, 23, 47, ?
  3. 3, 1, 2, 6, 12, 144, ?
  4. 1/5, 2/3, 3/11, 3/6, 5/17, 4/9, ?
  5. 7, 14, 24, 6, 12, 22, ?
  6. 19, 18, 20, 60, 15, 14, 16, ?
  7. 4, 2, 6, 6, 30, 150, ?
  8. 1, 3, 7, 17, 41, 99, ?
Loading comments...