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</details>
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<br>
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**[Try It:](/#)**
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**[Try It:](/https://play.google.com/store/apps/details?id=com.learnprogramming.codecamp)**
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#### S-3: Solution
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> To get the average, calculate the total and divide by the number of elements.
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&nbsp;
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[![Next Page](../assets/next-button.png)](../README.md)
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[![Next Page](../assets/next-button.png)](Divisible-by-3-and-5.md)
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&nbsp;
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###### tags: `programmig-hero` `python` `float` `int` `math`
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## 2.4: Divisible by 3 and 5
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**S-1: The problem**
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For a given number, find all the numbers smaller than the number. Numbers should be divisible by 3 and also by 5.
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<details>
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<summary><b>S-2: Click Here For Show Hints</b></summary>
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<p>So, you have to check two conditions: make sure the number is divisible by 3, and also by 5.
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> Hence, you will need to use two conditions.
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</p>
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</details>
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<br>
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**[Try It:](/https://play.google.com/store/apps/details?id=com.learnprogramming.codecamp)**
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#### S-3: Solution
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```python
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def divisible_by_3and5(num):
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result = [ ]
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for i in range(num):
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if i%3 == 0 and i%5 == 0:
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result.append(i)
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return result
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num = int (input('Enter your number: '))
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result = divisible_by_3and5(num)
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print(result)
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```
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**[Try It:](/https://play.google.com/store/apps/details?id=com.learnprogramming.codecamp)**
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#### S-4: Explanation
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This one is easy. We took an input number from the user, and then pass it to a function.
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In the function, we have a list and we ran a loop. This loop runs a range. This means we will get numbers from 0 to num. Here, num is the number that the user entered.
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Inside the loop, we have an if block. In the if block, we have two conditions. One condition says i % 3 ==0
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This means if you divide i by 3 and there will not be any remainder. If there is no remainder then the number is divisible by 3.
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Similarly, i%5==0 means the number is divisible by 5.
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As we have and between both conditions, to go, insider, the if-block, the i has to be divisible by 3 and also has to be divisible by 5.
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Inside the if block, we are appending the number in the result list. And then return the list.
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That’s how we are getting every number divisible by 3 and 5.
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> Isn’t it simple and cool?
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#### S-5: Quiz
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If you want to get the numbers that are either divisible by 3 or divisible by 7, which condition will you use?
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1. n%3 == 0 or n%7 ==0
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2. n%3 == 0 and n%7 ==0
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3. n%3 == 0 || n%7 ==0
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**The answer is: 1**
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#### S-6: Take Away
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Remainder(%) will be 0, if the number gets divided.
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&nbsp;
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[![Next Page](../assets/next-button.png)](Sum-of-digits.md)
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&nbsp;
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###### tags: `programmig-hero` `python` `float` `int` `math`
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Use the max function to get the largest number.
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&nbsp;
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[![Next Page](../assets/next-button.png)](Max-of-three.md)
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[![Next Page](../assets/next-button.png)](Average-of-numbers.md)
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###### tags: `programmig-hero` `python` `float` `int` `math`
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## 3.1: Sum of Elements
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**S-1: The problem**
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For a given list, get the sum of each number in the list
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<details>
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<summary><b>S-2: Click Here For Show Hints</b></summary>
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<p>Should be simple for you. Declare a sum variable. Then just loop through the list and add it to the sum.
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</p>
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</details>
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<br>
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#### S-3: Solution
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```python
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def get_sum(nums):
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sum = 0
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for num in nums:
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sum = sum + num
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return sum
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nums = [13,89,65,42,12,11,56]
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total = get_sum(nums)
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print("The total of each elements:",total)
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```
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**[Try It:](/https://play.google.com/store/apps/details?id=com.learnprogramming.codecamp)**
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#### S-4: Explanation
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It’s super simple.
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You got a list. Loop through the list. You have done that multiple times while learning Fundamentals.
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Declare a variable named sum before the loop. And inside the loop, add the number to the sum variable.
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And then finally return the sum.
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That’s it.
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Super easy. Even your grandma can do it.
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#### S-5: Shortcut
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There is an easier way to get sum of all numbers in a list. You can just pass the list of numbers to the sum function.
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```python
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nums = [13, 11, 16, 78, 31, 128]
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total = sum(nums)
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print(total)
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```
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#### S-6: Quiz
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What is the shortcut way to sum all the numbers in a list?
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1. Loop through the items
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2. Use the sum function
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3. Use a calculator
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**The answer is: 2**
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#### S-7: Take Away
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Use the sum function to sum all the numbers in a list.
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&nbsp;
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[![Next Page](../assets/next-button.png)](../README.md)
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&nbsp;
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###### tags: `programmig-hero` `python` `float` `int` `math`
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## 2. Page Outline
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* **[0](Easy-ones/Math-Power.md "Introduction")** - &nbsp;&nbsp; **[Introduction](/Easy-ones/Math-Power.md)**
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* **[0](Easy-ones/Math-Power.md "Introduction")** - &nbsp; **[Introduction](/Easy-ones/Math-Power.md)**
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* **[1](# "Easy ones")** - &nbsp;&nbsp; **[Easy ones](/Easy-ones/User-input-to-Number.md)**
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* **[1](# "Easy ones")** - &nbsp; **[Easy ones](/Easy-ones/User-input-to-Number.md)**
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* **[1.1](Easy-ones/User-input-to-Number.md "Convert input")** - **[Convert input](/Easy-ones/User-input-to-Number.md)**
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* **[1.4](/Easy-ones/Floor-Division.md "Floor Division")** - **[Floor Division](/Easy-ones/Floor-Division.md)**
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* **[1.5](Easy-ones/Temporary-variable.md "Temporary variable")** - **[Temporary variable](/Easy-ones/Temporary-variable.md)**
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&nbsp;
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* **[2](Number-Relate/Number-Related.md "Number Related")** - &nbsp;&nbsp; **[Number Related](/Easy-ones/Number-Related.md)**
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* **[2](Number-Relate/Number-Related.md "Number Related")** - &nbsp; **[Number Related](/Easy-ones/Number-Related.md)**
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* **[2.1](Number-Relate "Max of two")** - **[Max of two](/Number-Relate)**
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* **[2.2](Easy-ones/Math-Power.md "Max of three")** - **[Max of three](/Easy-ones/User-input-to-Number.md)**
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* **[2.3](Easy-ones/Math-Power.md "Average of numbers")** - **[Average of numbers](/Easy-ones/Math-Power.md)**
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* **[2.4](# "Divisible by 3 and 5")** - **[Divisible by 3 and 5](/#)**
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* **[2.4](Divisible-by-3-and-5.md "Divisible by 3 and 5")** - **[Divisible by 3 and 5](/Divisible-by-3-and-5.md)**
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* **[2.5](# "Sum of digits")** - **[Sum of digits](/#)**
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* **[2.5](Sum-of-digits.md "Sum of digits")** - **[Sum of digits](/Sum-of-digits.md)**
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* **[2.6](# "Coin sum")** - **[Coin sum](/#)**
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* **[2.6](Coin-sum.md "Coin sum")** - **[Coin sum](/Coin-sum.md)**
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## 0: Introduction
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### S-1: Welcome
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Welcome to the problem-solving galaxy.
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#### S-2: Problem Solving
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In this galaxy, we will focus on real-world coding related problem-solving.
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The problem-solving means, we will take a small programming problem. We will think about the process of solving the problem and then we will solve it.
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> n this galaxy, we will focus on real-world coding related problem-solving.<br><br>The problem-solving means, we will take a small programming problem. We will think about the process of solving the problem and then we will solve it.
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#### S-3: Explanation
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After the solution, we will explain the answer. Convey the concept and strategy to solve it.
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Solving coding problems helps you to think about the problem. It will make you a better developer. Moreover, if you want to participate in a programming contest, you need to practice problem-solving.
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#### S-5: Interview
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> Besides, large companies like Google, Facebook, Amazon, Uber, etc. ask a lot of problem-solving related questions in their job interview.<br><br>If you want to work any of these large companies, you should practice problem-solving.
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Besides, large companies like Google, Facebook, Amazon, Uber, etc. ask a lot of problem-solving related questions in their job interview.<br><br>If you want to work any of these large companies, you should practice problem-solving.
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#### S-6: Many solutions
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Always keep an open mind to learn multiple solutions to solve a problem.
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#### S-7: Let’s Start
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Let’s start your journey. Let’s solve every problem you face.
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> Let’s start your journey. Let’s solve every problem you face.
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*Let’s do it.*
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