find the square root of 121 b repeated subtraction method.
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We need to find square root of 121 by repeated subtraction method.
121−1=120
120−3=117
117−5=112
112−7=105
105−9=96
96−11=85
85−13=72
72−15=57
57−17=40
40−19=21
21−21=0
We have subtract odd numbers from the given number.
So, we start with subtracting 1 form 121 which gives us 120.
Now, subtract 3 from 120 which is 117.
The process continues till we get the final answer as 0.
The number of steps for which this operation has been performed will give the square root of the number.
In this case, we had to subtract in 11 steps to get to 0. Hence, root of 121 is 11.
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