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Take the LCM of 6,9,15,20
LCM is 180
now prime factorise it and make the doublets. One pair will be so which will be odd let's see:
180=2*2*3*3*5
As we can see that one 5 is also needed to make the no a perfect square. Therefore multiply the no by 5.
180*5=900
Therefore the smallest square no is 900
sq root is 30
LCM is 180
now prime factorise it and make the doublets. One pair will be so which will be odd let's see:
180=2*2*3*3*5
As we can see that one 5 is also needed to make the no a perfect square. Therefore multiply the no by 5.
180*5=900
Therefore the smallest square no is 900
sq root is 30
Scarlett1111:
Thanks a lot for your help!
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