25-06-2012, 04:20 PM
Friends, today i gonna show you a trick by which you can find the sqaure of a number with 5 in unit's place in 10 to 15 secs
now lets get started ......
Example Number- 105
1] find the sqaure of 5; which is 25
now you got last 2 digits of your answer..
2] then add one to the no. formed by rest digits ; in this case 10 +1 = 11
3] then mutiply the result of the addition by the no . formed by rest digits; in this case 10 x 11 = 110
now you got you missing digits in answer
so, the answer is 11025
Source: My Expirment