function addition2_2() { return "2 + 2 = 4"; }
function addition2_10() { return "2 + 10 = 12"; }
function addition24_12() { return "24 + 12 = 36"; }

console.log(addition2_2()); // "2 + 2 = 4"
console.log(addition2_10()); // "2 + 10 = 12"
console.log(addition24_12()); // "24 + 12 = 36"