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Home › Exam notes › IBPS Banking › Missing / Variable DI

Missing / Variable DI

Quantitative Aptitude / DI · Mains Data Analysis

Useful for: IBPS Banking

Overview

Missing-data DI hides some values; you recover them from totals, ratios or percentages before answering.

Key points

  • Row or column totals give missing entries by subtraction.
  • Ratios between items give missing values by proportion.
  • Percent shares of a total give values by multiplication.
  • Fill all missing values first if several questions use them.
  • Variable DI may ask for a range of possible values.

Explanation

  • Write equations when two values are missing.
  • Check that filled values are positive and reasonable.
  • Keep a clean filled table.
  • For ranges, use the extreme cases.

Step by step

  1. Translate the data or statement into numbers.
  2. Compute step by step with the right formula.
  3. Compare with options; check reasonableness.

Examples

  • Total 200; A = 50, B = 70 → C = 80.
  • A : B = 3 : 5 and A = 60 → B = 100.
  • Share of C is 35% of a total of 400 → C = 140.

Traps and advanced points

  • Trap: Forgetting a hidden total.
  • Trap: Proportion set up the wrong way.
  • Trap: Answering before filling all cells.

Quick revision

  • Totals → subtraction.
  • Ratios → proportion.
  • % share × total.

Practice MCQs

  1. Deposits change from 269 crore to 191 crore. What is the percentage change?

    1. -31.9
    2. -23.2
    3. -29
    4. -26.1

    Read chapter notes · Similar questions

    Show answer

    Answer: (c) -29. % change = (191 − 269) ÷ 269 × 100 = -78 ÷ 269 × 100 = -29%. The negative sign shows a fall of 29%.

  2. Deposits change from 274 crore to 206 crore. What is the percentage change?

    1. -27.3
    2. -24.82
    3. -19.85
    4. -22.34

    Read chapter notes · Similar questions

    Show answer

    Answer: (b) -24.82. % change = (206 − 274) ÷ 274 × 100 = -68 ÷ 274 × 100 = -24.82%. The negative sign shows a fall of 24.82%.

  3. Deposits change from 280 crore to 188 crore. What is the percentage change?

    1. -26.29
    2. -32.86
    3. -36.14
    4. -29.57

    Read chapter notes · Similar questions

    Show answer

    Answer: (b) -32.86. % change = (188 − 280) ÷ 280 × 100 = -92 ÷ 280 × 100 = -32.86%. The negative sign shows a fall of 32.86%.

  4. Deposits change from 285 crore to 203 crore. What is the percentage change?

    1. -31.65
    2. -25.89
    3. -28.77
    4. -23.02

    Read chapter notes · Similar questions

    Show answer

    Answer: (c) -28.77. % change = (203 − 285) ÷ 285 × 100 = -82 ÷ 285 × 100 = -28.77%. The negative sign shows a fall of 28.77%.

  5. Deposits change from 292 crore to 192 crore. What is the percentage change?

    1. -37.67
    2. -27.4
    3. -30.82
    4. -34.25

    Read chapter notes · Similar questions

    Show answer

    Answer: (d) -34.25. % change = (192 − 292) ÷ 292 × 100 = -100 ÷ 292 × 100 = -34.25%. The negative sign shows a fall of 34.25%.

More topics in this chapter

Notes and questions are written by Kundali IQ for practice. They are not official papers; always check the latest official notification for the syllabus and pattern.