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seen May 28 at 17:50

Dec
26
comment On “familiarity” (or How to avoid “going down the Math Rabbit Hole”?)
I have always wanted to learn discrete maths. I have tried with both text books and web pages. Each time I get stuck at 2 things 1. The mathematical hole the OP talks about 2. Mathematical symbols.
Dec
5
awarded  Editor
Dec
5
revised Calculate remaining quantity based on half-life with everyday supplementation
deleted 3 characters in body
Dec
5
asked Calculate remaining quantity based on half-life with everyday supplementation
Jul
18
awarded  Supporter
Oct
27
awarded  Scholar
Oct
27
accepted Sum of the digits of a numbers
Oct
24
comment Sum of the digits of a numbers
Yes, but I didn't say the answer is always 3. I said the answer is the same irrespective of what manner you add a particular number up - check the 3 different ways of adding up in the 3 examples in my question.
Oct
24
comment Sum of the digits of a numbers
I didn't say that the answer is always 3.
Oct
24
comment Sum of the digits of a numbers
@Arthur Upto stripping away the three 0-s is fine. But why does carrying out the addition 987 + 654 = 1641 not change the remainder modulo 9?
Oct
24
comment Sum of the digits of a numbers
I understand that the final answer answer for sumofdigits is always sumofdigits modulo 9. That's not my question. My question is why I get the same answer even if I go about summing different subsets of digits and then again summing them together - not sure how to describe this best - but my examples are there in my question
Oct
24
awarded  Student
Oct
24
asked Sum of the digits of a numbers