
Here is an Easy way to find Squares of numbers which contain 5 as their last digit..
Consider the digits written before 5 as a single number and multiply it be its succcessor and then write it and put 25 as the last two digits of it...
For example: to find square of 15:: (1*2)=2 and then write 25 at the end ,ie. 225 similarly to find square of 25:: (2*3)=6 and then write 25 at the end i.e, 625 for finding square of 105:: (10*11)=110 and then write 25 at the end ,i.e, 11025
PLS RATE IT IF YOU LIKE IT !! Some of The Related Articles: What is PSEUDO FORCE ? Image formation in Plane Mirror @ Infinity Distance Kaprekar Transformation for 3Digit Numbers

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(posted on 13 Nov 2011 11:57:53 IST)


niceeeeee...!! 


(posted on 13 Nov 2011 13:45:51 IST)


thnks!!! 


(posted on 14 Nov 2011 10:45:21 IST)


isnt it gud guys??? 


(posted on 22 Feb 2012 18:11:41 IST)


??? 


(posted on 16 Mar 2012 12:31:43 IST)


???? 


(posted on 19 Mar 2012 11:39:03 IST)


thnks 4 d lyks... 


(posted on 19 Mar 2012 14:34:47 IST)


ya...its nicee.... 


(posted on 19 Mar 2012 19:18:58 IST)


thnks 


(posted on 19 Mar 2012 19:25:01 IST)


n do rate it.. 


(posted on 20 Mar 2012 12:41:17 IST)


i will show how it works. the numbers are of the form 10n + 5. (10n+5)^2 = 100n^2 + 100n + 25. or, 100n(n+1) + 25. since we are multiplying by 100, at least 2 zeroes must be at the end , so adding 25 will result in the last two digits be 25. n(n+1) is also justified. 


(posted on 1 May 2012 21:08:27 IST)


rite.... 


(posted on 1 May 2012 21:46:35 IST)


good work rishabh 


(posted on 1 May 2012 21:46:59 IST)


it's awesome 


(posted on 2 May 2012 09:05:54 IST)


its very nice 


(posted on 2 May 2012 10:01:45 IST)


thnks guys.... 


(posted on 5 May 2012 18:35:55 IST)


very nice 


(posted on 6 May 2012 12:30:17 IST)


hit like then.... 


(posted on 10 May 2012 09:18:53 IST)


gr8 man. please post some more of these kinda shortcuts. plz... 


(posted on 10 May 2012 10:35:55 IST)


hit like buddy.... 
