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81 reapeted subtraction methods

Answer»

Hello user !!!

FINDING SQUARE of 81 using REPEATED subtractions of odd numbers.

81-1=80
80-3=77
77-5=72
72-7=65
65-9=56
56-11=45
45-13=32
32-15=17
17-17=0

Therefore, √81 =9

Hope it HELPS :)



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