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+---
+title: isOdd
+tags: math,beginner
+---
+
+Returns `true` if the given number is odd, `false` otherwise.
+
+Checks whether a number is odd or even using the modulo (`%`) operator.
+Returns `true` if the number is odd, `false` if the number is even.
+
+```js
+const isOdd = num => num % 2 === 1;
+```
+
+```js
+isOdd(3); // true
+```