Let me pose a question reg black hole number 123.,referred to in my earlier blog.
Suppose you take a number containing all odd digits or all even digits..
Do you think the situation will hold good?
Supposing also there are one or more zeros.How should you count these zeros viz whether as even or odd?
Test a few cases and find the answers.
Suppose you take a number containing all odd digits or all even digits..
Do you think the situation will hold good?
Supposing also there are one or more zeros.How should you count these zeros viz whether as even or odd?
Test a few cases and find the answers.
The same question arises when you have equal number of odds and evens. I think you shouldn't count zero as a digit, nor as even/odd number.
ReplyDeletee.g if number is 7546, then you get 224 -> 303 -> 022 -> 202
if number is 666, then you get 303 -> 022 -> 202
So in the cases you mention i think the black hole number would 202.