In a bus station there are 5 women and 4 men. How many different ways they...
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In a bus station there are 5 women and 4 men. How many different ways they can a. make a row? b. make a row so that women come first in this row? In a bus station there are 5 women and 4 men. How many different ways they can a. make a row? b. make a row so that women come first in this row?
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