1-7 Questions can be run using Node JS module. Kindly go to the directory where the files is then type 'node <name>.js'

The questions that has a React, it can be run in React application just copy the code and add it in test React Application then
try to use 'npm start' or 'yarn dev' if you are using yarn.

the data from aggregate can be run in node js with database.

the last numbers which are 14 and 15 are the json file. You can add this in a specific React Application the run 'npm start' or 'yarn dev' then navigate to the folder where the json file residing.