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.
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.
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.
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.