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Question
Some numbers are multiples of both 3 and 5.
So we can say that they are common to both 3 and 5.
Think! If you write the multiples common to 3 and 5 in the purple part, then will they still be in both the red and the blue circles?
- Which is the smallest among these common multiples? Repeat the game using the numbers 2 and 7.
- Write the common multiples of 2 and 7.
Solution
Yes, the common multiples of 3 and 5 in the purple part will still be in the red and blue circles.
15 is the smallest among the common multiples.
Common multiples of 2 and 7 are 14, 28, 42, 56, 70, and so on.
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