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Find the LCM Of 40, 144 and 180.
Given: 40, 144, and 180
To find: We have to find the LCM of 40, 144, and 180.
Solution:
Writing all the numbers as a product of their prime factors:
Prime factorization of 40:
- 2 $\times $ 2 $\times $ 2 $\times $ 5 = 23 $\times $ 51
Prime factorization of 144:
- 2 $\times $ 2 $\times $ 2 $\times $ 2 $\times $ 3 $\times $ 3 = 24 $\times $ 32
Prime factorization of 180:
- 2 $\times $ 2 $\times $ 3 $\times $ 3 $\times $ 5 = 22 $\times $ 32 $\times $ 51
Find highest power of each prime number:
24 , 32 , 51
Multiply these values together:
24 $\times $ 32 $\times $ 51 = 720
Thus,
LCM(40, 144, 180) = 720
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