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Solution: This proceeds as:
Step 1: 49 - 1 = 48
Step 2:48 - 3 = 45
Step 3: 45 - 5 = 40
Step 4: 40 - 7 = 33
Step 5: 33 - 9 = 24
Step 6: 24 - 11 = 13
Step 7: 13 - 13 = 0
As you can see that given number 49 was repeatedly subtracted by successive odd numbers (starting from 1) and we get zero in seventh step. Therefore 7 is the square root of 49
Or we can also write it as:
√49 = 7
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