Lesson eLearning

If the book contains 5 chapters and each chapter has 7 illustrations, and 3 of these illustrations appear in more than one chapter, how many unique illustrations are there?

hard MCQ 4 marks Class 2 · English · Haldi Adventure
  1. 28
  2. 30
  3. 32
  4. 34
Answer
32

The correct answer is 32 — Step 5: State the answer.

Step-by-step solution

  1. Step 1: Calculate total illustration instances: 5 chapters × 7 illustrations = 35.
  2. Step 2: Identify that 3 illustrations are repeated, so each appears twice, contributing 6 instances.
  3. Step 3: Compute unique instances of the repeated illustrations: 3.
  4. Step 4: Subtract duplicates from total: 35 – 3 = 32.
  5. Step 5: State the answer.
Common mistake: Not subtracting the repeated illustrations

Concept tested: Counting

Published · How this solution was prepared and checked

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