Single Digit Number in Python

Problem Statement:

In this Single Digit Number in Python problem, we are given a number, we need to add its digits, and we need to repeat this until the addition results in a single digit. At last, we need to print the result. For example, 78=> 7+8=>15=>1+5=>6.

Code for Single Digit Number in Python:

import math
n = 78
while True:
    if 1<=n<=9:
        print(n)
        break
    else:
        one = n%10
        two = math.floor(n/10)
        n = one + two

Output:

Explanation:

We imported the math module, declared n, and assigned 78 to it. Then inside it, we first check if n is between 1 and 9, we will print it else we will add it’s both digits. Our output results in 6 because 78=> 7+8=>15=>1+5=>6.

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