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g2601_2700.s2652_sum_multiples.readme.md Maven / Gradle / Ivy

2652\. Sum Multiples

Easy

Given a positive integer `n`, find the sum of all integers in the range `[1, n]` **inclusive** that are divisible by `3`, `5`, or `7`.

Return _an integer denoting the sum of all numbers in the given range satisfying the constraint._

**Example 1:**

**Input:** n = 7

**Output:** 21

**Explanation:** Numbers in the range `[1, 7]` that are divisible by `3`, `5,` or `7` are `3, 5, 6, 7`. The sum of these numbers is `21`.

**Example 2:**

**Input:** n = 10

**Output:** 40

**Explanation:** Numbers in the range `[1, 10] that are` divisible by `3`, `5,` or `7` are `3, 5, 6, 7, 9, 10`. The sum of these numbers is 40.

**Example 3:**

**Input:** n = 9

**Output:** 30

**Explanation:** Numbers in the range `[1, 9]` that are divisible by `3`, `5`, or `7` are `3, 5, 6, 7, 9`. The sum of these numbers is `30`.

**Constraints:**

*   1 <= n <= 103