Hand in:
- Chapter 5, #18, 35a, 41
- Given five (distinct) pairs of
gloves, how many ways are there for five people to each choose two
gloves with no one getting a matching pair?
- How many ways are there to arrange the integers from 1 to n
in such
a way that no two consecutive integers are next to each other,
with the
smaller one first and the larger one second. (In other words, for
each
i, 1<= i < n, i is not followed by i+1.) Show your answer
is Dn
+Dn-1.
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