3. E,a,b
There are two flats in the key of B flat major: B flat and E flat.
Two flats, B flat and E flat
2 flats B-flat and E-flat
2 flats B-flat and E-flat
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 or flats in C Major.
It has 7 flats. B flat E Flat A Flat D Flat G Flat C Flat F Flat
zero
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 D major- 2 sharps (F,C) G major- 1 sharp (F) E major- 4 sharps (F,C,G,D)
A major has 3 sharps, A minor has no sharps or flats.
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.