If you are asking how many sharps OR flats are in the key of A minor:
There are 3 Modes (scales) for minor keys.
Natural has no sharps or flats. The scale is A,B,C,D,E,F,G,A.
The Melodic has 2 sharps. The scale is A,B,C,D,E,F#,G#,A (ascending) and
A,G,F,E,D,C,B,A (descending) Yes, it's different (F#,G#) when you are going up & all naturals when going down.
Harmonic is heard most often with a G#. The scale is A,B,C,D,E,F,G#,A.
No matter which key you are in, to make the natural become harmonic, just raise the 7th (which is G in A minor) 1/2 step.
I hope this is helpful.
There aren't any sharps in c minor - there are three flats, b flat, e flat and a flat.
C major (no sharps or flats)Sharp Keys:G Major/E minor (1 sharp)D Major/B minor (2 sharps)A Major/F-sharp minor (3 sharps)E Major/C-sharp minor (4 sharps)B Major/G-sharp minor (5 sharps)F-sharp Major/D-sharp minor (6 sharps)C-sharp Major/A-sharp minor (7 sharps)Flat Keys:F Major/D minor (1 flat)B-flat Major/G minor (2 flats)E-flat Major/C minor (3 flats)A-flat Major/F minor (4 flats)D-flat Major/B-flat minor (5 flats)G-flat Major/E-flat minor (6 flats)C-flat Major/A-flat minor (7 flats)These are all the possible keys you can write in, enharmonic keys are italicised.
C Major, zero flats and zero sharps. The minor scale with the same number of flats and sharps is A Minor.
A♯ minor has the maximum seven sharps, but A♯ major has 10 'sharps', 4 sharps and three *double* sharps, so B-flat major will be preferable with only two flats.
There are no sharps in F minor.
There are a total of fifteen keys in Western music. Keys come with two forms, sharp keys and flat keys and one comes with all naturals. The complete list of major keys are shown below: C major (or A minor) - no sharps/flats G major (E minor) - 1 sharp D major (B minor) - 2 sharps A major (F-sharp minor) - 3 sharps E major (C-sharp minor) - 4 sharps B major (G-sharp minor) - 5 sharps F-sharp major (D-sharp minor) - 6 sharps C-sharp major (A-sharp minor) - 7 sharps F major (D minor) - 1 flat B-flat major (G minor) - 2 flats E-flat major (C minor) - 3 flats A-flat major (F minor) - 4 flats D-flat major (B-flat minor) - 5 flats G-flat major (E-flat minor) - 6 flats C-flat major (A-flat minor) -7 flats There you go, those are all the different keys you can write in!
It varies by key, just like with major keys. There can be as few as one flat (D minor) or all seven flats (A-flat minor). Minor keys can have sharps too.
D major has 2 sharps: F and C. D minor has none; it has 1 flat.
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)
F# minor, which has 3 sharps in the key signature.
There are no flats in b-minor. B major has two flats, both B-flat and A-flat, but b-flat minor is the relative minor of D-major, which has a sharp key signature. The sharps in b-minor are F-sharp and C-sharp.
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