This is the sentence: "What does a number that all of its digits are same called ?"
As I asked in title, is this a right sentence ?
No, that isn't right. There isn't a unique or single obviously optimal way to ask this in English. One possibility is: What do you call a number whose digits are all the same?
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No, that isn't right. There isn't a unique or single obviously optimal way to ask this in English. One possibility is:
What do you call a number whose digits are all the same?
(conversational rather than formal feel)