It would take ___ steps to arrive at 0 from 256 to find its square root by repeated subtraction of odd numbers.
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Solution
The square root of a number can be found by repeatedly subtracting odd integers from the number starting from 1. So in this case, 256- 1-3-5-7-9-11-13-15-17-19-21-23-25-27-29-31 = 0. (16 steps, hence square root of 256 is 16.)