Скачать или смотреть NCERT Class 6 Maths 2025 Chapter 5 A PRIME TIME PAGES 107, 108 & 109

NCERT Class 6 Maths 2025

Chapter 5 A PRIME TIME

PAGES 107, 108 & 109

5.1 Common Multiples and Common Factors

Idli-Vada Game

Figure it Out


1. At what number is ‘idli-vada’ said for the 10th time?

2. If the game is played for the numbers 1 to 90, find out:

a. How many times would the children say ‘idli’ (including the
times they say ‘idli-vada’)?
b. How many times would the children say ‘vada’ (including the
times they say ‘idli-vada’)?
c. How many times would the children say ‘idli-vada’?

3. What if the game was played till 900? How would your answers
change?

4. Is this figure somehow related to the ‘idli-vada’ game?
Hint: Imagine playing the game till 30. Draw the figure if
the game is played till 60.

Let us now play the ‘idli-vada’ game with different pairs of numbers:
a. 2 and 5,
b. 3 and 7,
c. 4 and 6.

Which of the following could be the other number:
2, 3, 5, 8, 10?