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Question 2 - Figure it out - Page 10, 11 - Chapter 1 Class 8 - A Square and a Cube (Ganita Prakash)
Last updated at July 30, 2025 by Teachoo
Class 8 (Ganita Prakash & Old NCERT)
Chapter 1 Class 8 - A Square and a Cube (Ganita Prakash)
- Introduction
- Square Numbers
- Perfect Squares - and its Properties
- Perfect Squares - and its Patterns
- Square Root
- Smallest number multiply or divide to get perfect square
- Estimating Square Root
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Figure it out - Page 10, 11
- Cubic Numbers
- Perfect Cubes - and its Properties
- Perfect Cubes - and its Patterns
- Cube Root
- Smallest number multiply or divide to get perfect cube
- A pinch of History
- Figure it out - Page 16, 17
Transcript
Question 2 Which one among 642, 1082, 2922, 362 has last digit 4? We know that Unit digit of square of any number will be the unit digit of its last digit To find the last digit of a square, you only need to square the last digit of the number. 642: The last digit is 42 = 16, which ends in 6. 1082: The last digit is 82 = 64, which ends in 4. 2922: The last digit is 22 = 4, which ends in 4. 362: The last digit is 62 = 36, which ends in 6. Thus, both 1082 and 2922 have a last digit of 4.
