A digital sum of a number is found by adding all of the digits of a number, then adding all the digits of that number, and so on, until you are left with a one-digit number.
For example, the digital sum of the number 729 would be found like this: 7+2+ 9 = 18, and then 1+ 8 = 9.
What is the digital sum of the number that can be found by the following formula?
(9[62773] + 2)[83721]
PS - The numbers in brackets are smaller and higher up on the math problem.
2007-10-07
02:52:32
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6 answers
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asked by
Anonymous