Find the square root of 121 by repeated subtraction method.
7. Solve: 7+4
+2
=Solve: 7+4
+2
=
−4
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1
Answer:
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
and 121 =11
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