Find the square root of 36 by the method of repeated subtraction.

The square root of 36 can be obtained by the method of repeated subtraction as follows:

(i) 36-1=35 (ii) 35-3=32 (iii) 32-5=27

(iv) 27-7=20 (v) 20-9=11 (vi) 11-11=0.

We have subtracted successive odd numbers starting from 1 to 36 and obtained 0 at the 6^th step.

Therefore, $\sqrt{36}=6$.