Question 13 (i) - Figure it out - Page 44, 45 - Chapter 2 Class 8 - Power Play (Ganita Prakash)
Last updated at Aug. 18, 2025 by Teachoo
Figure it out - Page 44, 45
Question 1
Important
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Class 8 (Ganita Prakash & Old NCERT)
Chapter 2 Class 8 - Power Play (Ganita Prakash)
- Basic Concepts & Formulas
- Introduction
- Exponential Notation and Operations
- Figure it out - Page 22, 23
- The Stones that Shine ...
- Formulas of Exponents
- Magical Pond
- Multiplying & Dividing two numbers with Same Power
- Combinations
- The Other Side of Powers
- Power Lines
- Powers of 10
- Scientific Notation
- Did you ever Wonder..
- Linear Growth vs Exponential Growth
- Getting a sense of Large Numbers
- A Pinch of History
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Figure it out - Page 44, 45
Transcript
Question 13 (i) Calculate and write the answer in scientific notation: (i) If each person in the world had 30 pieces of clothing, find the total number of pieces of clothing.Human Population as on August 2025 is 8.2 Billion people And, Billion has 9 zeroes So, Human Population = 8.2 × 109 Now, each person has 30 pieces of clothing Thus, Total Number of Pieces of clothing = 30 × Human Population = 30 × 8.2 × 109 = 30 × 82/10 × 109 = 3 × 82 × 109 = 246 × 109 Since scientific notation has 1 digit before decimal point = 2.46 × 102 × 109 Applying am × an = am+n = 2.46 × 102 + 9 = 2.46 × 1011 Thus, there are 2.46 × 1011 pieces of clothing
