The last sharp in the signature is one half-step below the key's tonic.
Go up a half-step from the last sharp in the key signature.
G sharp
D major has a key signature of F sharp and C sharp D minor has a key signature of B flat
There is no key signature that has Bb and C#.
No key signature has two of the same flat or sharp.
A sharp key signature is one that contains sharps.
G sharp
G sharp
Go up a half-step from the last sharp in the key signature.
D major has a key signature of F sharp and C sharp D minor has a key signature of B flat
C# Major
A major, or F# minor
There is no key signature that has Bb and C#.
The key signature for D sharp minor would be the one for F sharp major: FCGDAE. You can also think of it as E flat minorwhich is related to g flat major in which the key signature would be BEADGC.
No key signature has two of the same flat or sharp.
Yes it can
A major has three sharps: F, C, and G.F sharp, C sharp, G sharp