A major has 3 sharps, A minor has no sharps or flats.
A sharp key signature is one that contains sharps.
The Key of Ab does not have any sharps naturally written in it. It has four flats.
The key c sharp contains six sharps.... ( not 100% sure though)
C sharp major, or A sharp minor. The sharps are F, C, G, D, A, E and B.C# Major does
None, only flats. B flat in F major, B, E, A, and D flat in F minor.
There are six sharps in F sharp major.
One : F sharp!
There are four sharps in C sharp minor. These sharps are C# D# F# and G#. The harmonic minor also has B#. (which is C)
A sharp key signature is one that contains sharps.
That would be the key of A-sharp minor, the relative to C-sharp major, which contains seven sharps. The leading tone is G-double-sharp.
It contains one sharp: F.
Three sharps; F-sharp, C-sharp and G-sharp.
The Key of Ab does not have any sharps naturally written in it. It has four flats.
The key c sharp contains six sharps.... ( not 100% sure though)
The sharps indicate which notes are sharp. You have to learn how to recognize sharp keys, same as with flat keys.
The key of G Major has one sharp: F#
There are several key signatures that contain sharps.