Question

Define Doublestruck??
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Answer 1

Answer:

double-struck (Adjective) Formed in a blackboard bold typeface,

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

Blackboard bold is a typeface style that is often used for certain symbols in mathematical texts, in which certain lines of the symbol are doubled. The symbols usually denote number sets. One way of producing blackboard bold is to double-strike a character with a small offset on a typewriter.

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