the kay of G
The key of G Major has one sharp: F#
G
F# is a sharp key. A key is either sharp, natural, or flat. Never all three or two. Only one.
The key of Gmajor has 1 sharp which is F sharp.
The key that includes both F sharp and C sharp is the key of D major.
G has only one sharp, which is F-sharp.
The parallel minor of F-sharp major is F-sharp minor. A parallel minor key is the one with the same tonic note.
Yes, unless preceded by a Natural sign.
The key of E minor has one sharp: F sharp. It is the relative minor of G Major.
One : F sharp!
A key signature with one sharp (F#) would be either G major or E minor.
The key of D has two sharps(F# and C#) and the key of G only has one sharp(F#)