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Question 1 (Page 22) - Exponential Notation and Operations - Chapter 2 Class 8 - Power Play (Ganita Prakash)
Last updated at August 12, 2025 by Teachoo
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
- Figure it out - Page 44, 45
Transcript
Question 1 (Page 22) Which expression describes the thickness of a sheet of paper after it is folded 10 times? The initial thickness is represented by the letter-number v. (i) 10v (ii) 10 + v (iii) 2 × 10 × v (iv) 210 (v) 210v (vi) 102vInitial thickness = v After each fold, thickness doubles After 1 fold, Thickness = v × 2 After 2 folds, Thickness = (v × 2) × 2 = v × 22 After 3 folds, Thickness = (v × 2 × 2) × 2 = v × 23 Thus, after 10 folds Thickness = v × 210 So, correct answer is (v)
