In music you learned about the 7 Musical Notes A,B,C,D,E,F,G and 8 piano notes DO,RE,MI,FA,SO,LA,TI,DO. You are task to compose a song using these notes. If each song consists o three musical notes and four piano notes, how many different songs are possible? a) repetition of musical notes and piano notes are allowed b) any repetition of musical notes is allowed c) no repetition of musical notes
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
In music you learned about the 7 Musical Notes A,B,C,D,E,F,G and 8 piano notes DO,RE,MI,FA,SO,LA,TI,DO. You are task to compose a song using these notes. If each song consists o three musical notes and four piano notes, how many different songs are possible?
a) repetition of musical notes and piano notes are allowed
b) any repetition of musical notes is allowed
c) no repetition of musical notes
d) no repetition of musical notes and piano notes is allowed
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