Question

Find the L.C.M. of the numbers whose prime factorisation is shown below:

2x2x2x2 and 2 x 2 x 5​

Answer 1

Answer:

2x2x5=20

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Answer 2

Answer:

20

Step-by-step explanation:

We can write the prime factorizations as

 no1= $2^{4} * 5^{0}$

no2= $2^{2} * 5^{1}$

now since it's LCM take the highest power of each number ( for HCF we take lowest powers)

So from $2^{4}$ and $2^{2}$ ,$2^{4}$ is greater

similarly from 5 and $5^{0}$, 5 is greater

so we take $2^{4}$ and 5

= 2*2*5

= 20