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Question 2 - Page 130 - Parity - Chapter 6 Class 7 - Number Play - Ganita Prakash
Last updated at October 16, 2025 by Teachoo
Class 7 (Ganita Prakash 1, 2 & old NCERT)
Chapter 6 Class 7 - Number Play - Ganita Prakash
- Numbers can Tell us Things, Supercells
-
Parity
- Figure it out - Page 131
- Small Squares in Grids (Parity in Multiplication)
- Parity of Expressions
- Some Explorations in Grids
- Magic Square
- Figure it out - Page 136
- Generalising 3 × 3 Magic Square
- First ever 4 × 4 Magic Square
- Magic Squares in History and Culture
- Virahāṅka Fibonacci Numbers
- Digits in Disguise
- Figure it out - Page 143, 144
Transcript
Question 2 - Page 130 Two siblings, Martin and Maria, were born exactly one year apart. Today they are celebrating their birthday. Maria exclaims that the sum of their ages is 112. Is this possible? Why or why not? Since Martin and Maria are born one year apart They will have Odd and Even ages Example: 51 & 52, 25 & 26 Now, Sum of Odd + Even = Odd + Even = Odd Since sum would be odd, 112 cannot be the sum ∴ Sum of ages 112 is not possible
