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The first step is to find the L.C.M. of the given number
. And we get the pair as 
.
11
Then last and the final step is to form a pair of numbers and count each pair as one and multiply them.
This will be the final answer.
For Ex
1:)Taking L.C.M. of 121
So we write the factors as
Now we take one factor of the pair ,
So we get the square root of 121 as 11