Normally it means to multiply....
Heil Hitler OR Bye Bye
An asterisk is not an idiom. It is a punctuation mark. It looks like a little star *
There is no such thing
The asterisk in a mathematical equation, usually in the context of a computer expression, means to multiply.
In this context, the asterisk symbol () typically indicates a footnote or a reference to additional information.
Igual>>> ALGEBRA
In Algebra, "is" means Equal (=).
If you mean in the scorecard, a not-out batsman is designated by an asterisk.
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You do not meet NMSC's requirements
"And" in algebra usually means addition.
If you mean on a keyboard then it's [SHIFT] + 8