# Python: Calculate the sum of three given numbers, if the values are equal then return thrice of their sum

## Python Basic: Exercise-18 with Solution

Write a Python program to calculate the sum of three given numbers. If the values are equal, return three times their sum.

**Pictorial Presentation:**

**Sample Solution:**

**Python Code:**

```
# Define a function named "sum_thrice" that takes three integer parameters: x, y, and z
def sum_thrice(x, y, z):
# Calculate the sum of x, y, and z
sum = x + y + z
# Check if x, y, and z are all equal (all three numbers are the same)
if x == y == z:
# If they are equal, triple the sum
sum = sum * 3
# Return the final sum
return sum
# Call the "sum_thrice" function with the arguments (1, 2, 3) and print the result
print(sum_thrice(1, 2, 3))
# Call the "sum_thrice" function with the arguments (3, 3, 3) and print the result
print(sum_thrice(3, 3, 3))
```

Sample Output:

6 27

**Explanation:**

The said script defines a function called sum_thrice(x, y, z) that takes three integers as arguments and returns their sum. The function, however, multiplies the sum by 3 if all three integers are equal.

Now the script calls the function twice with the input values (1,2,3) and (3,3,3).

Whenever 1, 2, and 3 are input values, the three inputs are not equal, so it returns 6.

Whenever 3, 3, and 3 are input values, the three inputs are equal so the function multiplies the sum by 3 and returns 27.

Depending on the inputs, the if statement holds true only if x == y == z, otherwise it holds False.

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