Understand the problem
Start with hints
Source of the problem
General concepts + Number theory
DO you know how to start working backward
working backward means that when you press A is makes -1 from the result and pressing B you can divide 2
strategies are like this , divide the no. as many step you can , when the result it not divisible by 2 just -1
Connected Program at Cheenta
I.S.I. & C.M.I. Entrance Program
Indian Statistical Institute and Chennai Mathematical Institute offer challenging bachelor’s program for gifted students. These courses are B.Stat and B.Math program in I.S.I., B.Sc. Math in C.M.I.
The entrances to these programs are far more challenging than usual engineering entrances. Cheenta offers an intense, problem-driven program for these two entrances.