To find the smallest whole number that is equal to seven times the sum of its digits, we can start by considering the smallest possible number, which is 1.
Let's calculate the sum of the digits of 1: 1 = 1.
Now, let's check if this number satisfies the condition of being equal to seven times the sum of its digits: 7 * 1 = 7.
Since 7 is not equal to 1, we need to try the next smallest number, which is 2.
The sum of the digits of 2 is: 2 = 2.
Now, let's check if this number satisfies the condition: 7 * 2 = 14.
Since 14 is not equal to 2, we continue to the next number.
We repeat this process for each subsequent number until we find the smallest whole number that satisfies the condition.
After trying a few more numbers, we find that the smallest whole number that is equal to seven times the sum of its digits is 7.
The sum of the digits of 7 is: 7 = 7.
And, 7 * 7 = 49, which is equal to 7.
Therefore, the smallest whole number that is equal to seven times the sum of its digits is 7.
