for loops js practice sum , factorial

Sum of all number

 let sum = 0;

let n = 3;

for(let i = 0; i < n; i++){

  sum += (i+1)

}

console.log(`the sum of first ${n} natural number is ${sum}`)

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let num = 5;

let factorial = 1;

for(let i = 1; i <= num; i++){

  factorial *=i;

}

console.log(`the factorial of {num} is : ${factorial}`)

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