# Question

The price of a European tour includes four stopovers to be selected from among 10 cities. In how many different ways can one plan such a tour

(a) If the order of the stopovers matters;

(b) If the order of the stopovers does not matter?

(a) If the order of the stopovers matters;

(b) If the order of the stopovers does not matter?

## Answer to relevant Questions

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