E natural minor has one sharp on F. The key signature is the same as G major.
The key of E-flat major has three flats, not sharps. The flats are B-flat, E-flat, and A-flat. In terms of sharps, it is the key that is a minor third above C major, which has no sharps or flats.
A major has 3 sharps, A minor has no sharps or flats.
There aren't any sharps in c minor - there are three flats, b flat, e flat and a flat.
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.
The B minor scale has two flats. Specifically, it includes the notes B, C#, D, E, F#, G, and A, with its relative key, D major, having two sharps instead. In the natural minor form, B minor incorporates the same two flats as its harmonic and melodic variations.
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.
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.
The key of A minor contain's no sharps or flats and as such is related to the key of C major (all white notes on the piano for both). This relationship is why it's called the "relative minor" of C major.
The natural minor has 5 and the harmonic minor has 4 and a double sharp.
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.
There are no sharps or flats in C Major.
E Minor is the same key as G Major, and there is one sharp. It is the F#, which in E Minor scale is the second.