John left school with 8.43 he found a quarter on his way home and then stopped to buy an Apple for 0.89 . how much money did he
2 answers:
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Answer:
84 different lineups are possible
Step-by-step explanation:
The order in which the songs are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.
In this question:
6 musics from a set of 9. So
84 different lineups are possible