The names, or notes, of all the white notes on a piano are written on pieces of paper and placed in a cup. There are 7 sets of the notes D, E, F, and G and 8 sets of the notes A, B, and C. If a person draws one note out of the cup without looking, what are his or her chances of getting a C?

Question

The names, or notes,  of all the white notes on a piano are written on pieces of paper and placed in a cup. There are 7 sets of the notes D, E, F, and G and 8 sets of the notes A, B, and C.  If a person draws one note out of the cup without looking, what are his or her chances of getting a C?

oobleck · Answer

total notes: 7*4 + 8*3 = 52 so, how many of those are C?