By repeated subtraction, find whether 121 is a perfect square or not.
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121 is a perfect square
11*11 = 121
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Answer:
it is a perfect square of 11
Step-by-step explanation:
121-1=120-3=117-5=112-7=105-9=96-11=85-13=72-15=57-17=40-19=21-21=0
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