Find the square roots of 169 by methods of repeated subtraction.
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169-1= 168
168-3=165
165-5=160
160-7=153
153-9=144
144-11=133
133-13 = 120
120-15=105
105-17=88
88-19=69
69-21=48
48-23=25
25-25=0
since it is completely subtracted at 13th time
by reapeted subtraction method
ANS. square root of 169 is 13
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