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Lesson 1 of 2 · Missing number in figure/grid

Row column rule

Mathematical Operations, Coded Inequalities, Missing Number · for IPMAT Indore, IPMAT Rohtak and JIPMAT

Worked examples

Example 3Easy

Rows 9 6 4 60 / 5 8 6 78 / 8 4 7 84 / 6 7 3 ?. Solution: 39. (6 + 7) × 3.

Example 4Typical

Columns 5, 7, 18 / 6, 11, 25 / 4, ?, 9. Solution: 7. Bottom = top² − middle: 16 − 7 = 9.

Formulas you need

common rules: (a+b)×c, a×b−c, a2−b, a+b+c, ×3 round a circle\text{common rules: } (a+b)\times c,\ a \times b - c,\ a^2 - b,\ \sqrt{a}+\sqrt{b}+\sqrt{c},\ \times 3 \text{ round a circle}

Watch out

  • One-row rule: 6 × 7 − 6 = 36 fits nothing else in the grid.

Picked from the Missing number in figure/grid note for this micro-concept automatically. The whole note: Missing number in figure/grid.