4 - Bb, Eb, Ab and Db.
C major: no sharps, no flats F major: no sharps, B flat Bb (B flat) major: no sharps, B and E flat Eb major: no sharps; B, E, and A flat Ab major: no sharps; B, E, A, and D flat Db major: no sharps; B, E, A, D, and G flat Gb major/F# (F sharp) major: no sharps; B, E, A, D, G, and C flat / F, C, G, D, A, and E sharp; no flats B major: F, C, G, D, and A sharp; no flats E major: F, C, G, and D sharp; no flats A major: F, C, and G sharp; no flats D major: F and C sharp, no flats G major: F sharp, no flats
E minor contains an F-sharp and no flats. E F# G A B C D E
Bb C Db Eb F Gb A Bb Four notes have flats. The key signature would contain five flats for Bb minor, with accidentals used on the A naturals.
The G major key has one sharp, which is F#. In terms of flats, G major does not have any flats. This key signature is commonly used in various musical compositions and is often one of the first keys taught to beginner musicians.
Gb major has six flats - B♭, E♭, A♭, D♭, G♭, and C♭. F major has one flat - B♭. F minor has four flats - B♭, E♭, A♭ and D♭. Gb minor is a theoretical scale and has five flats and two *double* flats - with A♭, D♭, G♭, C♭ and F♭ - with B and E double-flatted.
Assuming you mean F major, then the answer is one flat.
There are no flats in D major, but there are 2 sharps. C sharp and F sharp.
None. There are 2 sharps, C# and F#
There are no flats in Em, just an F sharp!
The F minor scale has four flats.
There are seven F naturals. If you add the F sharps there's 14. If you add the F flats there's 21. Interesting question.
C major: no sharps, no flats F major: no sharps, B flat Bb (B flat) major: no sharps, B and E flat Eb major: no sharps; B, E, and A flat Ab major: no sharps; B, E, A, and D flat Db major: no sharps; B, E, A, D, and G flat Gb major/F# (F sharp) major: no sharps; B, E, A, D, G, and C flat / F, C, G, D, A, and E sharp; no flats B major: F, C, G, D, and A sharp; no flats E major: F, C, G, and D sharp; no flats A major: F, C, and G sharp; no flats D major: F and C sharp, no flats G major: F sharp, no flats
C major - No sharps or flats D major- 2 sharps (F,C) G major- 1 sharp (F) E major- 4 sharps (F,C,G,D)
E minor contains an F-sharp and no flats. E F# G A B C D E
One, Bb. 1, the flat is B flat.
A B C D E F G, and sharps and flats inbetween.
Bb C Db Eb F Gb A Bb Four notes have flats. The key signature would contain five flats for Bb minor, with accidentals used on the A naturals.