Class 7 Maths | Chapter 6 | Figure it Out | Page 143 | Ques 1 to 4 | Number Play | Ganita Prakash 1

Lets study "Number Play" (Chapter 6, Class 7), from the new NCERT book Ganita Prakash, Page No. 143, 144 (Question 1 to 4). All parts are arranged in order in the Playlist.    • Full Chapter | Class 7 Maths | Chapter 6 |...   Each Figure it out (Exercise) in order in the Playlist    • All Figure it Out | Class 7 Maths | Chapte...   Please subscribe if you want more videos like this. Text Figure it Out 1. A light bulb is ON. Dorjee toggles its switch 77 times. Will the bulb be on or off? Why? 2. Liswini has a large old encyclopaedia. When she opened it, several loose pages fell out of it. She counted 50 sheets in total, each printed on both sides. Can the sum of the page numbers of the loose sheets be 6000? Why or why not? 3. Here is a 2 × 3 grid. For each row and column, the parity of the sum is written in the circle; ‘e’ for even and ‘o’ for odd. Fill the 6 boxes with 3 odd numbers (‘o’) and 3 even numbers (‘e’) to satisfy the parity of the row and column sums. 4. Make a 3 × 3 magic square with 0 as the magic sum. All numbers can not be zero. Use negative numbers, as needed.