Question: C++ code Link: https://drive.google.com/file/d/1Th9fAOWC8pKznXq-uBdwVIhg4PQuvCa7/view?usp=sharing please fast Ex 1. Code Refactoring (25 points) Fadi has a safe with a lock that has 20 buttons that can

C++ code

Link: https://drive.google.com/file/d/1Th9fAOWC8pKznXq-uBdwVIhg4PQuvCa7/view?usp=sharing

please fast C++ code Link: https://drive.google.com/file/d/1Th9fAOWC8pKznXq-uBdwVIhg4PQuvCa7/view?usp=sharing please fast Ex 1. Code Refactoring (25

Ex 1. Code Refactoring (25 points) Fadi has a safe with a lock that has 20 buttons that can each be clicked only once. Fadi remembers that the safe opens after clicking on 5 buttons but can't remember which 5 buttons. He decided to try every possible 5 buttons and wants to know how many trials he has to make. Fadi knows from high school that this requires computing combinations (2Cor 20 choose 5). So he wrote a program to compute n choose k for any 1

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