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// jshint esversion: 6

//req. 2-A
function square(n){
   return Math.pow(n, 2);
}

//req. 2-B
function sayHelloByFullName(fName, lName) {
  return `Hey, ${fName} ${lName}.
  Welcome to JavaScript!`;
}


//req. 3-A

//recognizer for odd numbers
let isOdd = function(n){
  if(n % 2 == 1){
    return true;
  }
  else{
    return false;
  }
};