Commit de947cd

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feat: add swapping & arithmetic operations

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Original file line number	Diff line number	Diff line change
`@@ -37,3 +37,32 @@ age = Number(age);`
`37`	`37`	`console.log(typeof(age), age);`
`38`	`38`	`*/`
`39`	`39`
	`40`	`+`
	`41`	`+// Question: Swap two variables via 3 methods`
	`42`	`+`
	`43`	`+// Method1: swapping with extra variables`
	`44`	`+let num5 = 10;`
	`45`	`+let num6 = 20;`
	`46`	`+let newnum = num5;`
	`47`	`+num5 = num6;`
	`48`	`+num6 = newnum;`
	`49`	`+console.log(num5, num6);`
	`50`	`+`
	`51`	`+// Method2: Using simple mathematics`
	`52`	`+num5 = num5 + num6; // 30`
	`53`	`+num6 = num5 - num6; // 10`
	`54`	`+num5 = num5 - num6; // 20`
	`55`	`+`
	`56`	`+// Method3: Using destrcturing`
	`57`	`+[num5, num6] = [num6, num5];`
	`58`	`+console.log(num5, num6);`
	`59`	`+`
	`60`	`+`
	`61`	`+// Question: Arithmetic operations`
	`62`	`+let num7 = 12;`
	`63`	`+let num8 = 22;`
	`64`	`+console.log(num7 + num8); // addition`
	`65`	`+console.log(num7 - num8); // subtraction`
	`66`	`+console.log(num7 * num8); // multiplication`
	`67`	`+console.log(Math.floor(num7 / num8)); // division -> quotient`
	`68`	`+console.log(num7 % num8); // modulus -> remainder`

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