36 = 4 x 9
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Okay, so start with 4x4 to get 16, then add 4 to get 20, now divide that 20 by 4 to get 5 and add 4 to get 9. There you go :D
To determine how many numbers have a sum of digits equal to nine, we consider the possible combinations of digits that add up to nine. These combinations include (9,0), (8,1), (7,2), (6,3), and (5,4). Therefore, there are five possible combinations of digits that sum up to nine.
4
the sum the sum
A Sum is the anwser to a Question when you ADD two numbers like 23 + 1 = the sum of the question.