Question

what do u mean by #​

Answer 1

this is hashtag

A hashtag, introduced by the number sign, or hash symbol, #, is a type of metadata tag used on social networks such as Twitter and other microblogging services. It lets users apply dynamic, user-generated tagging that helps other users easily find messages with a specific theme or content.

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. please mark brainlist please

Answer 2

Answer:

Hi mate

Explanation:

A hash value is a numeric value of a fixed length that uniquely identifies data. Hash values represent large amounts of data as much smaller numeric values, so they are used with digital signatures. You can sign a hash value more efficiently than signing the larger value.