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BDMO REGIONAL 2015
Posted: Mon Feb 06, 2017 3:28 pm
by Math Mad Muggle
Help me to solve this......
Re: BDMO REGIONAL 2015
Posted: Thu Feb 23, 2017 4:58 pm
by aritra barua
Note that the distinct numbers are repeated according to their intrinsic values.Find their summation noticing that the summation of a distinct pair is equal to the square of that distinct pair.Find the remainder which shows that the division upon a number by 3 leaves the same remainder as it does upon the division of the summation of that number by 3.It is easy to prove this fact using modular arithmetic.