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Lesson 1 of 4 · Number series: missing / wrong term

Difference

Series (number / letter / alphanumeric) · for IPMAT Indore, IPMAT Rohtak and JIPMAT · asked in JIPMAT 2023

The exam method

  1. Gaps first. Write the differences under the terms. Constant → add it. Growing by a constant → second differences (JIPMAT 2023: 2, 12, 30, 56, 90: gaps 10, 18, 26, 34, +8 each → 132).

Formulas you need

second difference constant⇒quadratic pattern\text{second difference constant} \Rightarrow \text{quadratic pattern}

Picked from the Number series: missing / wrong term note for this micro-concept automatically. The whole note: Number series: missing / wrong term.