I have got this prob in last year...it was, find the last two digit of 3^500...I have got the last number in an easy way...today I have solved it fully....but don't know is it right or wrong....
3 =_ -7 (mod 10)
so,3^4 =_ -7^4 =_ 01
so,3^4*125 =_ 01^250 =_ 01
I am not expert at using latex..sorry for this ....please tell me is it right or wrong??????????
Help in ensuring...
Re: Help in ensuring...
@dipan bro, you are correct. btw if you dont know latex, you should have just wrote the equ generally. then you should have taken the moderators' help. your equation really looks ugly and hard to understand.
Please Install $L^AT_EX$ fonts in your PC for better looking equations,
Learn how to write equations, and don't forget to read Forum Guide and Rules.
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." - Sherlock Holmes
Learn how to write equations, and don't forget to read Forum Guide and Rules.
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." - Sherlock Holmes