Added reference to HackerRank Number Theory Mathematics Problem 'Mehta and his Laziness'.
Added reference to HackerRank Number Theory Mathematics Problem 'Mehta and his Laziness'.

shivkrthakur/HackerRankSolutions,shivkrthakur/HackerRankSolutions,shivkrthakur/HackerRankSolutions,shivkrthakur/HackerRankSolutions