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Question: Find the LCM of 8 and 10 using a Venn diagram.


A ) 40
B ) 8
C ) 80
D ) 10

Steps to derive

 [Write the prime factors for 8 and 10.]
1 8 = 2 x 2 x 2
10 = 2 x 5

2 Represent all the prime factors of 8 and 10 in a Venn diagram.


 [Multiply all the factors in the Venn diagram.]
3 2 x 2 x 2 x 5 = 40

4 The LCM of 8 and 10 is 40.



Hence the right answer is Option A

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